No more searching for random online tools or risking your data on untrusted sites. OneClick Pro offers over 150+ powerful tools from image conversion to code formatting in one place, accessible online without registration or subscription.
Calculate precise age from a birth date in years, months, and days. Perfect for determining exact age for legal documents, birthday planning, or tracking developmental milestones. Get detailed age breakdowns including total days lived and upcoming birthday information.
Calculate the difference between two dates in days, weeks, months, and years with precision. Essential for project management, legal deadlines, relationship milestones, or any situation where you need to know the exact duration between two dates. Get comprehensive breakdowns in multiple time units.
Format dates in various styles including ISO 8601, locale-specific formats, and custom patterns. Perfect for developers, content creators, and anyone who needs to display dates in different formats for international audiences or specific applications. Supports multiple date formats, time zones, and localization options.
Effortlessly calculate the number of days that have passed since a specific date with our Days Since Counter. This user-friendly online tool is perfect for tracking anniversaries, milestones, and historical events. Simply input your start date, and the tool will quickly tell you how many days have elapsed. Enhance your tracking and time management without any software installation.
Easily calculate the number of days until a specific date with our Days Until Counter. This user-friendly online tool is perfect for planning events, tracking deadlines, and managing important dates. Simply input your target date, and the tool will quickly tell you how many days remain. Enhance your planning and time management without any software installation.
Convert date and time between different timezones worldwide with ease. Essential for scheduling international meetings, coordinating with remote teams, or planning travel across time zones. Instantly see what time it is in any location and avoid scheduling conflicts.
Easily convert Unix time to human-readable date formats and vice versa with our Unix Time Converter. This powerful online tool is perfect for developers, system administrators, and anyone working with Unix timestamps. Ensure accurate time conversions and streamline your workflow without any software installation.
Find the day of the week for any date in history or future. Instantly discover what day of the week you were born, when historical events occurred, or plan future events on specific weekdays. Perfect for historians, event planners, and the curious minded.
Calculate the number of working days (excluding weekends) between two dates for accurate project planning and scheduling. Essential for business planning, payroll calculations, and project timelines. Automatically excludes Saturdays and Sundays to give you precise business day counts.
Generate all possible anagrams from your word with our Anagram Generator. Rearrange letters to create every permutation. Perfect for word games, Scrabble, puzzles, and creative writing. Limited to 8 characters for optimal performance. Discover all letter combinations instantly.
Transform your text into reverse order with our Backwards Text Generator. Perfect for creating mirror text, fun messages, or unique creative content. Simply enter your text and watch it flip backwards!
Transform text between multiple case formats instantly with our free online case converter tool. Convert to uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case, kebab-case, and more with a single click. Perfect for developers, writers, and anyone who needs to standardize text formatting quickly and efficiently.
Convert CSV data into JSON format quickly and easily with our free online CSV to JSON converter. Perfect for developers importing spreadsheet data into applications, APIs, or databases. Transform tabular CSV data into structured JSON arrays of objects instantly.
Generate relevant hashtags from your text or keywords with our free online tool. Perfect for Instagram, Twitter, TikTok, and other social media platforms. Automatically filters common words and creates optimized hashtags.
Transform JSON arrays into CSV format effortlessly with our free online JSON to CSV converter. Ideal for exporting data to spreadsheets, databases, or any application that requires CSV input. Convert complex JSON data structures into simple, tabular CSV format in seconds.
Transform JSON data into XML format effortlessly with our free online JSON to XML converter. Perfect for integrating with legacy systems, SOAP APIs, or any application requiring XML input. Convert modern JSON structures into well-formed XML documents instantly.
Remove line breaks from your text quickly and easily with our Line Breaks Remover tool. Perfect for cleaning up copied text, formatting content, or preparing text for specific platforms that don't support line breaks.
Instantly reverse the order of any list with our free online list reverser tool. Whether you need to flip a sequence, invert data order, or simply turn your list upside down, this tool provides immediate results. Perfect for developers, data analysts, and anyone working with ordered lists.
Randomize your lists instantly with our free online list shuffler tool. Perfect for creating random orders, picking winners, generating random sequences, or mixing up any collection of items. Get truly random results with each shuffle for fair and unbiased randomization.
Sort your lists alphabetically or numerically with ease using our free online list sorter tool. Perfect for organizing data, names, numbers, or any collection of items in ascending or descending order. Save time and eliminate manual sorting errors with instant, accurate results.
Convert plain text lists into JSON arrays quickly and easily with our free online converter tool. Perfect for developers who need to transform simple lists into JSON format for APIs, configuration files, or data processing. Get properly formatted, valid JSON output instantly.
Generate high-quality Lorem Ipsum text for your projects with our Lorem Ipsum Generator. This online tool is essential for designers, developers, and content creators who need placeholder text for mockups, drafts, and more. Easily create customizable Lorem Ipsum text without any software installation.
Create beautifully formatted Markdown tables from CSV or tab-separated data with our free online generator tool. Perfect for documentation, README files, GitHub wikis, or any Markdown-supported platform. Generate clean, properly aligned Markdown tables instantly without manual formatting.
Calculate the true cost of your meetings with our free meeting cost calculator. Determine meeting expenses based on hourly rates, number of attendees, and duration. Perfect for businesses, managers, and teams looking to optimize meeting efficiency and reduce unnecessary costs.
Check if your text is a palindrome with our Palindrome Checker. Detects palindromes by ignoring spaces, punctuation, and case. Perfect for word games, puzzles, creative writing, and linguistic analysis. Instantly verify if text reads the same forwards and backwards.
Calculate how many Pomodoro sessions you need for your tasks with our free Pomodoro timer calculator. Plan your work sessions efficiently using the proven 25-minute work + 5-minute break technique. Perfect for time management, productivity planning, and task scheduling.
Estimate how long it takes to read your content with our free tool. Get reading times for different speeds, word count, and content statistics. Perfect for bloggers, content creators, and presenters planning their content.
Eliminate empty and whitespace-only lines from your text instantly with our free blank line remover tool. Clean up documents, code, logs, and data files by removing unnecessary blank lines while preserving your content structure. Perfect for condensing text, improving readability, and preparing files for processing.
Easily compare two texts and identify the differences with our Text Comparison Tool. This powerful online utility is perfect for writers, editors, developers, and anyone who needs to compare text files for changes or discrepancies. Highlight the differences between two versions of a document, code, or any text-based content without any software installation. Enhance your editing and reviewing workflow with this user-friendly and reliable tool.
Extract all email addresses from text with our powerful email extraction tool. Automatically finds and lists unique email addresses from any document, webpage, or text content. Perfect for data mining, contact list building, and email validation tasks.
Extract all numbers from text including integers, decimals, and negative values. This powerful number extraction tool helps you quickly pull numerical data from documents, reports, or any text content. Perfect for data analysis, financial processing, and statistical work.
Extract all URLs from text with this efficient link extraction tool. Automatically finds and lists unique HTTP and HTTPS links from any content source. Ideal for link analysis, web scraping preparation, and content auditing tasks.
Find and replace all occurrences of text with new text quickly and accurately. This essential text editing tool helps you make bulk changes to your content in seconds. Perfect for updating documents, fixing errors, and batch text modifications.
Add line numbers to your text automatically with our free line numbering tool. Transform plain text into a numbered list by adding sequential numbers to each line. Perfect for creating ordered lists, numbering code lines, adding reference numbers to documents, or organizing content that needs sequential identifiers.
Add custom text before (prefix) or after (suffix) each line of your text with our free prefix/suffix tool. Bulk edit multiple lines by adding common characters, symbols, or text at the start or end of every line. Ideal for formatting lists, adding quotes, creating code arrays, adding bullet points, or standardizing text formatting across many lines.
Eliminate duplicate lines from your text and keep only unique lines with our free duplicate remover tool. Clean up lists, data files, and documents by automatically detecting and removing repeated lines while preserving the original order. Perfect for deduplicating data, cleaning up lists, removing redundant entries, or ensuring each line appears only once.
Instantly reverse the order of lines in your text with our free line reversal tool. Transform your text by flipping the line order so the last line becomes first and the first becomes last. Useful for reversing lists, reordering data, creating interesting text effects, or reorganizing content quickly and easily.
Randomly shuffle and randomize the order of lines in your text with our free line shuffler tool. Perfect for creating random lists, randomizing quiz questions, generating random orders, or mixing up any line-based content. Each shuffle produces a unique random arrangement of your lines while keeping the content of each line intact.
Get detailed statistics about your text including character count, word count, lines, sentences, and paragraphs. This comprehensive text analysis tool provides instant insights into your content's structure and length. Perfect for writers, students, and content creators meeting specific requirements.
Convert any text into a URL-friendly slug format. Perfect for creating clean URLs, file names, or any text that needs to be web-safe and SEO-friendly.
Quickly remove leading and trailing whitespace from each line of text with our free trim lines tool. Clean up messy text formatting, remove unnecessary spaces, tabs, and other whitespace characters from the beginning and end of every line. Essential for code formatting, data cleaning, and text preprocessing tasks.
Truncate text to a specified length with a custom suffix for clean, professional content previews. Automatically shortens long text while preserving readability with customizable endings. Perfect for creating excerpts, meta descriptions, and preview snippets.
Wrap text to a specified line width while preserving word boundaries for improved readability. Automatically breaks long lines at word boundaries to create clean, well-formatted text. Ideal for formatting code comments, emails, and documentation.
Count characters for Twitter/X posts with our free online tool. See real-time character count, remaining characters, hashtags, mentions, and URLs. Optimized for Twitter's 280 character limit and URL weighting.
Generate unique identifiers for various applications with our Unique ID Generator. This online tool is essential for developers, database administrators, and anyone needing unique IDs for data management, SEO, and code readability. Ensure your identifiers are unique and enhance your workflow without any software installation.
Count the number of words, characters, sentences, and paragraphs in your text with our Word Counter. This online tool is essential for writers, students, and anyone needing precise text analysis. Ensure your content meets specific length requirements and enhance your text processing workflow without any software installation.
Remove duplicate words from your text efficiently with our Word Deduper tool. This online utility is perfect for writers, editors, and anyone looking to clean up their text. Ensure your content is unique and precise, enhancing your text processing workflow without any software installation.
Analyze word frequency in your text with our Word Frequency Analyzer. Discover the most common words, their count, and percentage distribution. Perfect for content analysis, SEO optimization, keyword research, and understanding text patterns. Get instant insights into word usage and improve your writing strategy.
Sort a list of words in alphabetical order with our Word Sorter tool. This online utility is ideal for writers, editors, and anyone looking to organize their text. Ensure your content is well-ordered and enhance your text processing workflow without any software installation.
Convert XML documents to JSON format instantly with our free online XML to JSON converter tool. Ideal for developers working with APIs, data migration, or modern web applications that prefer JSON over XML. Transform complex XML structures into clean, readable JSON in seconds.
Effortlessly convert between different units of area with our versatile Area Converter. This essential online tool supports conversions between square meters, square kilometers, square miles, and many other units. Perfect for architects, engineers, real estate professionals, and anyone needing precise area conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable area conversion tool.
Calculate mean, median, mode, range, and other statistical measures from any list of numbers with our free online average calculator. Perfect for students, teachers, data analysts, and anyone needing quick statistical analysis. Get comprehensive results including sum, count, standard deviation, and variance instantly.
Easily convert data storage units between different formats with our Data Storage Converter. This powerful online tool supports a wide range of data units, ensuring accurate and precise conversions. Perfect for IT professionals, data analysts, and anyone managing digital storage, this converter simplifies data management tasks without requiring additional software.
Convert data transfer rates between various units with our Data Transfer Rate Converter. This versatile tool is ideal for network administrators, IT professionals, and anyone needing precise data rate conversions. Ensure accurate and efficient data transfer rate calculations without any software installation.
Effortlessly convert between different units of energy with our versatile Energy Converter. This essential online tool supports conversions between joules, kilojoules, calories, kilocalories, and many other units. Perfect for scientists, engineers, nutritionists, and anyone needing precise energy conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable energy conversion tool.
Calculate the factorial of any number with our free online calculator. Enter a non-negative integer to find n! (n factorial). Shows the result, expression, and number of digits. Essential for combinatorics and probability.
Effortlessly convert between different units of frequency with our versatile Frequency Converter. This essential online tool supports conversions between hertz, kilohertz, megahertz, gigahertz, and many other units. Perfect for engineers, scientists, technicians, and anyone needing precise frequency conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable frequency conversion tool.
Calculate the Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of two numbers with our free online calculator. Also shows prime factorization for both numbers. Essential for math students and fraction simplification.
Easily convert between different units of length with our versatile Length Converter. This essential online tool supports conversions between meters, kilometers, miles, and many other units. Perfect for engineers, scientists, students, and anyone needing precise length conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable length conversion tool.
Convert numbers between different number systems with our free online base converter. Easily transform values between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) formats. Essential for programmers, computer science students, and digital electronics enthusiasts.
Format numbers with thousands separators, currency symbols, and locale-specific formatting using our free online number formatter. Convert plain numbers into professionally formatted values for financial reports, international documents, and localized content. Supports multiple number formats and currencies worldwide.
Calculate percentages quickly and accurately with our free online percentage calculator. Find what percentage one number is of another, calculate percentage increases or decreases, and solve complex percentage problems instantly. Perfect for students, business professionals, and anyone needing fast percentage calculations.
Effortlessly convert between different units of pressure with our versatile Pressure Converter. This essential online tool supports conversions between pascals, kilopascals, bar, psi, and many other units. Perfect for engineers, scientists, technicians, and anyone needing precise pressure conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable pressure conversion tool.
Check if a number is prime with our free online calculator. Enter any positive integer to determine if it's prime, see its factors, and find the nearest prime numbers. Essential tool for math and cryptography.
Generate truly random numbers instantly with our free online random number generator. Create single or multiple random numbers within any range for games, raffles, statistical sampling, or testing. Fast, reliable, and easy to use for all your random number needs.
Calculate, simplify, and scale ratios with our free online ratio calculator. Find equivalent ratios, solve proportions, and scale values proportionally for cooking, design, construction, and mathematics. Perfect for students, chefs, designers, and anyone working with proportional relationships.
Convert between Roman numerals and Arabic numbers instantly with our free online converter. Transform numbers like 2024 to MMXXIV or decode Roman numerals back to standard numbers. Perfect for students, historians, designers, and anyone working with Roman numeral notation.
Effortlessly convert between different units of rotation with our versatile Rotation Converter. This essential online tool supports conversions between degrees, radians, gradians, and many other units. Perfect for engineers, scientists, mathematicians, and anyone needing precise rotation conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable rotation conversion tool.
Convert between decimal and scientific notation with our free online calculator. Transform large or small numbers to/from scientific notation, engineering notation, and E-notation. Essential for scientists, engineers, and students.
Convert screen units to pixels and vice versa with our Screen Unit Converter. This online tool is essential for designers, developers, and anyone working with digital displays. Ensure accurate and precise conversions between different screen units, enhancing your design and development workflow without any software installation.
Effortlessly convert between different units of speed with our versatile Speed Converter. This essential online tool supports conversions between meters per second, kilometers per hour, miles per hour, knots, and many other units. Perfect for engineers, scientists, athletes, and anyone needing precise speed conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable speed conversion tool.
Effortlessly convert temperatures between Celsius, Fahrenheit, and Kelvin with our versatile Temperature Converter. This essential online tool is perfect for scientists, engineers, students, and anyone needing precise temperature conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable temperature conversion tool.
Effortlessly convert between different units of time with our versatile Time Converter. This essential online tool supports conversions between seconds, minutes, hours, days, and many other units. Perfect for scientists, engineers, students, and anyone needing precise time conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable time conversion tool.
Convert between SI unit prefixes with our free online calculator. Convert kilo to mega, milli to micro, giga to tera, and more. Supports all standard metric prefixes from yotta (10²⁴) to atto (10⁻¹⁸).
Effortlessly convert between different units of volume with our versatile Volume Converter. This essential online tool supports conversions between liters, milliliters, cubic meters, gallons, and many other units. Perfect for scientists, engineers, chefs, and anyone needing precise volume conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable volume conversion tool.
Effortlessly convert between different units of weight with our versatile Weight Converter. This essential online tool supports conversions between grams, kilograms, pounds, and many other units. Perfect for chefs, scientists, fitness enthusiasts, and anyone needing precise weight conversions. Ensure accurate and quick conversions without any software installation. Enhance your workflow with this user-friendly and reliable weight conversion tool.
Convert Base64 encoded text to plain text and vice versa. This powerful, easy-to-use online tool allows you to transform your text data for compatibility with various text-based platforms. Streamline your text processing tasks without any software installation.
Convert text to binary code or decode binary back to text with this free online binary translator. Essential for programmers, students, and computer science enthusiasts to understand binary representation, debug low-level code, or learn how computers store data. Get instant conversions between text and binary format.
Convert between numeric and symbolic Unix file permissions (chmod) with this intuitive chmod calculator tool. Easily understand and generate correct file permission codes for Linux and Unix systems, whether you prefer numeric (755) or symbolic (rwxr-xr-x) notation. Essential for system administrators, DevOps engineers, and developers working with Unix-based systems.
Format your code in various programming languages with our advanced Code Formatter tool. Perfect for developers, designers, and IT professionals, this tool ensures your code is clean, readable, and optimized for any platform or device. Whether you're working with JavaScript, HTML, CSS, or other languages, our Code Formatter streamlines your workflow and enhances your coding efficiency without the need for additional software.
Convert colors between different formats: HEX, RGB, HSL, and HSV. Essential for designers and developers who need to work with colors across different platforms and design tools. Instantly convert any color value to the format you need for CSS, graphics software, or other applications.
Generate color palettes (complementary, triadic, analogous, etc.) from a base color. Perfect for designers creating cohesive color schemes for websites, apps, branding, and graphics. Explore harmonious color combinations based on color theory principles to elevate your design projects.
Parse cron expressions and see a human-readable explanation of when they run. Perfect for developers and system administrators who need to create or understand cron job schedules. Avoid scheduling mistakes by visualizing exactly when your cron expressions will execute.
Minify CSS code by removing whitespace, comments, and optimizing selectors to reduce file size and improve website performance. This free online CSS minifier compresses your stylesheets for production deployment, resulting in faster page loads and better user experience. Essential for web developers optimizing their sites for speed.
Protect your email address from spam bots with our free email obfuscator. Convert email addresses to HTML entities, JavaScript, and other formats that humans can read but bots can't easily scrape.
Generate CSS gradient code from two or more colors. Create beautiful linear and radial gradients with customizable angles, positions, and color stops. Perfect for web designers who want to quickly generate production-ready CSS gradient code for modern websites and applications.
Generate cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512) from text input. Perfect for verifying file integrity, creating checksums, or generating unique identifiers from text. This tool supports multiple hashing algorithms to meet different security and compatibility requirements.
Convert text to hexadecimal representation or decode hex back to text with this free online hex converter. Widely used by programmers for color codes, memory addresses, debugging, and data encoding. Get instant conversions between text and hexadecimal format with support for ASCII and Unicode characters.
Convert HTML entities to plain text and vice versa with our efficient HTML Entity Converter. This online tool is perfect for web developers, content managers, and anyone dealing with HTML content. Ensure your text data is compatible with various platforms and easily transform special characters without any software installation.
Minify HTML code by removing whitespace, comments, and unnecessary characters to reduce file size and improve website loading speed. This free online HTML minifier optimizes your HTML for production, reducing bandwidth usage and improving SEO performance. Perfect for web developers looking to optimize their websites without affecting functionality.
View and analyze HTML code in a readable format with our HTML Viewer. This powerful online tool is essential for web developers, designers, and anyone working with HTML. Ensure your code is accurate and well-structured, enhancing your web development workflow without any software installation.
Look up HTTP status codes and their meanings with this comprehensive HTTP status code reference tool. Quickly understand what any HTTP status code means, from common codes like 200 and 404 to less common ones, complete with detailed explanations and use cases. Essential for web developers, API developers, and system administrators.
Calculate IP subnet information with our free online calculator. Enter an IP address and CIDR notation to find network address, broadcast address, subnet mask, and usable hosts. Essential for network administrators and engineers.
Minify JavaScript code by removing whitespace, comments, and shortening variable names to dramatically reduce file size and boost website performance. This free online JS minifier optimizes your code for production, improving load times and user experience. Perfect for developers deploying JavaScript applications and libraries.
Effortlessly convert JSON data to YAML and vice versa with our JSON Converter. This versatile online tool is perfect for developers, data analysts, and anyone working with data serialization formats. Ensure your data is compatible across different platforms and streamline your workflow without any software installation.
Compare two JSON objects and visualize the differences with this advanced JSON diff tool. Instantly identify added, modified, and deleted fields between JSON structures, making it perfect for API testing, configuration management, and data validation. Save time debugging and ensure data consistency across environments.
Find all paths to values in a JSON object with this powerful JSON path finder tool. Quickly navigate complex JSON structures and identify exact paths to any value, making it easier to access nested data in your applications. Perfect for developers working with APIs, configuration files, and data analysis.
Fix and repair broken JSON data with our reliable JSON Repair tool. This online utility is essential for developers, data analysts, and anyone working with JSON files. Ensure your JSON data is correctly formatted and error-free, enhancing your data processing workflow without any software installation.
Ensure your JSON data conforms to predefined schemas with our powerful JSON Schema Validator. This essential online tool is perfect for developers, data analysts, and anyone working with JSON data. Validate your JSON against any schema, ensuring data integrity and consistency across various applications. Streamline your data validation processes without any software installation.
Decode JSON Web Tokens (JWT) instantly to view headers, payloads, and claims without verification. This free online JWT decoder helps developers debug authentication tokens, inspect OAuth tokens, and understand token structure. Note: This tool decodes tokens but does not verify signatures for security purposes.
Convert Markdown text to HTML and vice versa with our versatile Markdown Converter. This tool is perfect for developers, writers, and content managers who need to transform text for compatibility with various platforms. Streamline your text processing tasks without any software installation.
Look up MIME types by file extension or find file extensions for MIME types with this comprehensive MIME type reference tool. Quickly identify the correct Content-Type header for any file format or discover which extensions correspond to a specific MIME type. Essential for web development, file uploads, and HTTP header configuration.
Convert text to Morse code or decode Morse code back to text with this free online translator. Perfect for learning Morse code, sending secret messages, or educational purposes. Supports international Morse code standard with dots, dashes, and proper spacing for accurate communication.
Easily extract Open Graph metadata from any URL with our Open Graph Viewer. This online tool helps you enhance your website's social media previews by extracting essential information like title, description, and image. Perfect for web developers, digital marketers, and content creators, this tool ensures your social media links are optimized for better engagement without any software installation.
Generate strong, secure random passwords with customizable length and character types. Perfect for creating unique passwords for accounts, applications, and systems that meet specific security requirements. Our password generator helps you create cryptographically secure passwords with options for uppercase, lowercase, numbers, and special characters.
Check how strong your password is with our free online tool. Analyzes password strength, estimates crack time, and provides improvement suggestions. Essential for creating secure passwords for your accounts.
Easily serialize and deserialize data in PHP with our versatile PHP Serializer and Deserializer tool. This online utility is perfect for developers looking to convert complex data structures into storable strings and retrieve them back into their original form. Ensure accurate and efficient data handling without any software installation. Enhance your PHP development workflow with this user-friendly and reliable tool.
Escape special characters in strings for use in regular expressions with this essential regex escape tool. Automatically converts special regex characters into their escaped equivalents, preventing syntax errors and ensuring your literal strings work correctly in pattern matching. Essential for developers working with dynamic regex patterns.
Test regular expressions against text and see all matches highlighted. Essential for developers working with pattern matching, data validation, or text processing. Debug and refine your regex patterns in real-time with visual feedback showing exactly what your expression matches.
Apply ROT13 cipher to encode or decode text using this simple letter substitution cipher. ROT13 replaces each letter with the letter 13 positions after it in the alphabet, making it perfect for hiding spoilers, puzzle solutions, or creating simple obfuscated text. The same operation both encodes and decodes messages.
Format and beautify SQL queries instantly with our free online SQL formatter. Clean up messy SQL code with proper indentation, line breaks, and keyword highlighting. Supports SELECT, INSERT, UPDATE, DELETE, JOIN, WHERE, GROUP BY, and ORDER BY statements. Perfect for developers and database administrators.
Transform your text into various formats, including camelCase, kebab-case, snake_case, and more with our String Converter. This online tool is perfect for developers, designers, and anyone looking to enhance their text processing workflow. Convert text to match coding standards, improve SEO, or ensure consistency in your documents without any software installation.
Escape or unescape special characters in strings for JSON, HTML, XML, URL, and other formats with this versatile string escape tool. Convert special characters to their encoded equivalents or decode them back, ensuring data integrity across different contexts. Perfect for web developers, API integration, and data processing tasks.
Generate Unix timestamps or convert between timestamp and human-readable date formats. Essential for developers working with APIs, databases, or logging systems that use Unix time. Quickly convert timestamps to readable dates or generate current timestamps for testing and development.
Convert text to Unicode escape sequences or decode Unicode sequences back to readable text with this free online tool. Perfect for developers working with internationalization, debugging character encoding issues, or handling special characters in code. Supports all Unicode characters including emojis, symbols, and non-Latin scripts.
Encode or decode URL components with this free online tool that handles special characters, spaces, and symbols. Perfect for developers and marketers who need to create valid URLs for APIs, web forms, or email campaigns. Simply paste your text or URL and get instant results with proper percent-encoding.
Parse and extract detailed information from URLs with our URL Parser tool. This online utility is essential for developers, SEO specialists, and digital marketers who need to analyze URL structures for optimization and data extraction. Ensure your URLs are correctly formatted and enhance your workflow without any software installation.
Parse user agent strings to identify browser, operating system, device type, and version information with this powerful user agent parser tool. Extract detailed information from HTTP User-Agent headers including browser engine, device model, and OS version. Perfect for analytics, browser compatibility testing, and responsive design development.
Validate and analyze UUIDs (Universally Unique Identifiers) instantly with our free UUID validator. Check UUID format, identify version (v1, v3, v4, v5), determine variant type, and extract timestamps from time-based UUIDs. Essential for developers working with unique identifiers.
Convert between YAML and JSON formats instantly with our free online YAML converter. Transform YAML configuration files to JSON and vice versa with perfect formatting. Essential for developers, DevOps engineers, and anyone working with data serialization formats.
Calculate your Body Mass Index (BMI) with our free online calculator. Enter your weight and height to instantly determine your BMI and health category. Works with both metric (kg/cm) and imperial (lbs/inches) units.
Calculate your daily calorie needs with our free TDEE calculator. Find your BMR and maintenance calories based on age, weight, height, and activity level. Perfect for weight loss, muscle gain, or maintaining your current weight.
Calculate your heart rate training zones with our free calculator. Enter your age to find your maximum heart rate and optimal training zones. Optionally add resting heart rate for more accurate Karvonen method calculations.
Calculate your running or walking pace with our free pace calculator. Enter your distance and time to find your pace per kilometer or mile, plus average speed. Perfect for runners, cyclists, and athletes tracking performance.
Ensure your website is free from broken links with our powerful Broken Link Checker. This easy-to-use online tool scans your website for broken links, enhancing your site's usability and SEO performance. Perfect for webmasters, digital marketers, and SEO specialists, our tool provides accurate results without any software installation. Keep your website in top shape and improve user experience by identifying and fixing broken links quickly.
Extract and analyze headings from any webpage with our Heading Extractor tool. This user-friendly online tool helps web developers, SEO specialists, and content creators identify and optimize headings for better structure and search engine visibility. Ensure your content is well-organized and SEO-friendly without any software installation.
Analyze and optimize the keyword density of your text with our Keyword Density Checker. This online tool is perfect for SEO specialists, content creators, and digital marketers. Ensure your content is optimized for search engines and improve your website's visibility without any software installation.
Ensure the integrity of your website's links with our comprehensive Link Checker tool. This powerful online utility scans your site for internal, external, and nofollow links, providing a detailed report to help you identify broken links and optimize your link structure. Perfect for webmasters, SEO specialists, and developers, this tool enhances your website's performance and user experience without any software installation.
Evaluate and improve the readability of your text with our Readability Score Checker. This online tool is perfect for writers, content creators, and educators who need to ensure their text is easy to read and understand. Enhance your text processing workflow without any software installation.
Calculate compound interest with our free online calculator. See how your investments grow over time with different compounding frequencies. Perfect for savings accounts, investments, retirement planning, and understanding the power of compounding.
Calculate discounts, savings, and final prices instantly with our free discount calculator. Find out how much you save with percentage discounts, compare original and discounted prices, and determine the best deals. Perfect for shoppers, retailers, and business professionals.
Calculate your loan payments with our free online loan calculator. Enter your loan amount, interest rate, and term to see monthly payments, total interest, and total cost. Perfect for mortgages, auto loans, personal loans, and student loans.
Calculate selling prices and profit margins with our free markup calculator. Enter your cost and desired markup percentage to instantly see selling price, markup amount, and profit margin. Essential for retailers, wholesalers, and pricing strategies.
Convert salary between different pay periods with our free calculator. Easily convert between hourly, daily, weekly, bi-weekly, monthly, and yearly rates. Perfect for job comparisons, freelance rate calculations, and budgeting.
Calculate tips quickly and easily with our free online tip calculator. Enter your bill amount and tip percentage to instantly see the tip amount, total bill, and split costs per person. Perfect for restaurants, delivery, and service industry tipping.
Calculate VAT (Value Added Tax) instantly with our free online calculator. Add VAT to a net amount or remove VAT from a gross amount. Works with any VAT rate. Perfect for invoicing, accounting, and business calculations.
Retrieve and verify DNS records for any domain with our comprehensive DNS Record Checker tool. This powerful online utility fetches various DNS records, including A, AAAA, MX, CNAME, TXT, and more. Perfect for network administrators, web developers, and anyone needing detailed DNS information for a domain. Enhance your domain management and troubleshooting process without any software installation.
Quickly check the availability of any domain name with our Domain Availability Checker tool. This powerful online utility helps you find out if a domain name is available for registration, making it perfect for entrepreneurs, businesses, and web developers looking to secure a new domain. Ensure you get the domain name you want without any software installation.
Ensure the validity of email addresses with our comprehensive Email Validator tool. This powerful online utility checks the syntax and MX records of email addresses to verify their validity. Perfect for developers, marketers, and anyone who needs to validate email addresses for accuracy and deliverability. Enhance your email validation process without any software installation.
Discover detailed information about your IP address with our comprehensive IP Checker tool. This essential online utility provides your IPv4 and IPv6 addresses, as well as in-depth browser information. Perfect for network administrators, web developers, and anyone needing to understand their IP and browser settings. Ensure your network and browser configurations are correct without any software installation.
Ensure the security and validity of your website's SSL certificate with our SSL Certificate Checker tool. This powerful online utility verifies the details of your SSL certificate, including its expiration date, issuer, and overall validity. Perfect for webmasters, developers, and security professionals, this tool helps maintain the integrity and trustworthiness of your website without any software installation.
Discover detailed information about domain registrations with our WHOIS Lookup tool. This powerful online utility retrieves WHOIS data for any domain, providing information about the domain owner, registration dates, expiry dates, and more. Perfect for webmasters, domain investors, and security professionals, this tool helps you understand the history and ownership of any domain without any software installation.
Easily create favicons for your website with our Favicon Generator. This powerful online tool generates favicons in all common sizes and provides the necessary HTML code to include them in your website. Perfect for web developers, designers, and anyone looking to enhance their website's branding and user experience. Ensure your site stands out with a professional favicon without any software installation.
Apply Gaussian blur to any image with our free online blur tool. Adjust the blur intensity with the sigma slider for soft focus effects, background blur, or privacy protection. Perfect for creating professional-looking images with depth and focus.
Add a solid color border around your images with customizable size and color options. This versatile framing tool helps your images stand out, creates visual separation from backgrounds, and adds professional polish to photos for web use, social media, presentations, or print. Choose from any color and adjust border thickness to perfectly complement your image.
Adjust image brightness online with our free brightness adjustment tool. Values below 1 darken the image, values above 1 brighten it. Perfect for fixing underexposed or overexposed photos and enhancing image visibility.
Reduce the file size of your images without sacrificing quality using our Image Compressor. This online tool is perfect for web developers, designers, and anyone looking to optimize images for faster loading times and better performance. Compress images while maintaining their original quality and enhance your image processing workflow without any software installation.
Adjust image contrast online to make your photos pop. Values below 1 reduce contrast for a softer look, while values above 1 increase contrast for more vibrant, punchy images. Enhance your photos instantly with our free contrast adjustment tool.
Convert your images to different formats with our versatile Image Converter. This tool is ideal for digital professionals and enthusiasts looking to enhance media compatibility and performance across various platforms. Whether you're converting from JPG to PNG for transparency, from TIFF to JPG for web optimization, or any other format, our tool delivers high-quality results effortlessly.
Crop images online by specifying exact pixel coordinates for precise control. Define the top-left corner position and the width and height of the crop area. Perfect for removing unwanted elements, focusing on subjects, or creating specific aspect ratios.
Remove transparency from images by flattening them onto a solid background color of your choice. This essential tool converts transparent PNG images to opaque formats like JPG, making them compatible with platforms and applications that don't support transparency. Perfect for preparing images for web use, printing, or sharing on social media.
Flip images horizontally (mirror), vertically (upside down), or both directions with our free online flip tool. Perfect for creating mirror images, fixing orientation issues, or creating symmetrical effects for your photos and graphics.
Apply gamma correction to adjust image brightness in a non-linear way, preserving detail in shadows and highlights. Standard value is 2.2 for sRGB displays, but you can adjust gamma to lighten or darken images while maintaining natural appearance. Essential for display calibration and photo correction.
Convert any image to grayscale (black and white) online for free. Upload your image and instantly get a professional grayscale version. Perfect for creating classic black and white photos, reducing file size, or preparing images for printing.
Rotate the hue of image colors to shift the entire color palette around the color wheel. Shift colors from -180 to 180 degrees to transform blue skies to pink, green grass to orange, and more. Create stunning creative effects and unique color schemes for your images.
Apply a median filter to reduce noise in images while preserving edges and details. This powerful noise reduction tool is especially effective at removing salt-and-pepper noise, speckles, and random artifacts from photos without blurring important edge details. Perfect for cleaning up scanned images, digital photos, or images with compression artifacts.
Create a negative (inverted colors) version of any image instantly. All colors will be inverted to their opposite on the color wheel, creating striking artistic effects. Perfect for simulating film negatives, creating surreal art, or analyzing image composition.
Enhance image contrast by stretching the histogram to use the full tonal range. Automatically adjusts brightness levels for optimal contrast, bringing out details in shadows and highlights. Ideal for improving underexposed or flat-looking images with one click.
Resize images to specific dimensions with our free online image resizer. Choose from different fit modes including cover, contain, fill, inside, or outside to control how your image is scaled. Perfect for optimizing images for web, social media, or print.
Rotate images by any angle from -360 to 360 degrees with our free online rotation tool. Perfect for fixing orientation issues, straightening crooked photos, or creating artistic effects. Precise angle control for professional results.
Adjust image color saturation to control color intensity and vibrancy. Use 0 for grayscale conversion, 1 for original colors, or higher values for vibrant, eye-catching colors. Perfect for enhancing photos or creating artistic effects with precise color control.
Apply a classic sepia tone effect to your images for a vintage, warm brown appearance reminiscent of old photographs. This timeless filter transforms modern digital photos into nostalgic, antique-looking images with warm brown tones that evoke memories and add artistic character. Perfect for creating vintage-style photos, historical presentations, or adding a retro aesthetic to your creative projects.
Sharpen and enhance image clarity with advanced edge detection. Adjust the sharpening intensity to bring out fine details and edges in your photos. Perfect for improving image quality and making blurry images crisp and clear.
Convert image to pure black and white using a customizable threshold value. Pixels above the threshold become white, pixels below become black, creating high-contrast binary images. Perfect for document scanning, creating silhouettes, artistic effects, and preparing images for further processing.
Apply a color tint to any image to create artistic monochromatic effects and mood. Enter a hex color code to colorize your image with that specific color, perfect for creating sepia tones, vintage effects, or matching brand color schemes.
Easily decode QR codes from images with our QR Code Decoder tool. This powerful online utility is perfect for anyone who needs to extract information from QR codes quickly and accurately. Simply upload an image containing a QR code, and the tool will decode it to reveal the embedded information. Enhance your data extraction and analysis workflow without any software installation.
Create custom QR codes instantly with our QR Code Generator. Ideal for businesses and individuals looking to promote websites, share links, or provide quick access to information through scannable codes. Generate high-quality QR codes for URLs, phone numbers, text messages, or Wi-Fi passwords. This tool is essential for marketers and event organizers who need to enhance mobile engagement and provide seamless user interactions. Generate your QR code online today and connect with your audience in a snap!
OneClick Pro is a free collection of more than 150 web tools for everyday work: converting images and units, formatting and validating code, checking domains and SEO, and working with text, dates and numbers. Every tool runs without registration or subscription, and what you enter is only used to calculate your result and is never stored. Use it as a quick toolbox for one-off tasks, or bookmark the tools you rely on every day.