Image Aspect Ratio
Crop an image to a standard aspect ratio such as 1:1, 4:3, 3:2, 16:9, 9:16, 4:5 or 21:9 without scaling it. The tool keeps the largest area of the chosen shape and lets you anchor it to the center, an edge, or a smart position that looks for the most interesting or most detailed region. Ideal for social posts, video thumbnails, banners and consistent product galleries.
Frequently asked questions
How does the aspect ratio crop work?
The tool finds the largest rectangle of the chosen ratio that fits inside your image and removes the rest. If the image is wider than the ratio it trims the sides, and if it is taller it trims the top and bottom. The kept pixels are not resized.
Which ratios are available?
You can choose 1:1, 4:3, 3:4, 3:2, 2:3, 16:9, 9:16, 4:5, 5:4, 21:9, 2:1 and 1:2. The first number is the width and the second the height, so 9:16 is a tall vertical frame and 16:9 a wide one.
What do the crop positions do?
Center keeps the middle of the image, and top, bottom, left and right keep the matching edge. Smart (most interesting area) looks for faces, skin tones and saturated color, and Smart (most detail) keeps the region with the most texture and edges.
Which ratio should I use for social media?
Use 1:1 for square posts, 4:5 for portrait feed posts, 9:16 for stories, reels and shorts, and 16:9 for video thumbnails and link previews. 3:2 matches most camera photos and 21:9 suits wide website banners.
Does cropping reduce quality?
No. The tool only removes pixels and never scales, so the kept area has exactly the original detail. The result is saved as a lossless PNG.
What if my image already has the ratio?
If the image already matches the ratio, nothing needs to be removed and it is returned at its original size as a PNG.
How big is the result?
One side keeps its original length and the other is shortened to match the ratio. A 4000 by 3000 photo cropped to 16:9 becomes 4000 by 2250 pixels. Images larger than 4000 pixels on a side are scaled to fit 4000 pixels first.
Can I get an exact pixel size like 1080 by 1080?
This tool sets the shape only. To reach an exact size, crop to the ratio first and then use the Image Resize tool, or use the Image Thumbnail Generator, which crops and scales in one step.
Which file formats can I upload?
You can upload JPEG, PNG, GIF, WebP, TIFF and AVIF images up to 5 MB. Animated files are cropped using their first frame.
Is the smart position always right?
The smart positions are good at keeping people and busy subjects in frame, but they cannot know your intent. If the subject is cut, try the other smart mode or anchor the crop to the edge where the subject sits.