# AVIF Compressor

Produce very small, high quality AVIF images with our AVIF Compressor. It encodes your photo with the AV1 codec at the quality you set and lets you trade encoding effort for file size, keeping transparency and removing metadata. AVIF files are often half the size of a comparable JPEG, which helps page speed and Core Web Vitals. Made for web developers, designers and performance work.

## Frequently asked questions

### What is AVIF and why use it?

AVIF is an image format based on the AV1 video codec. At the same visual quality it is often about 50 percent smaller than JPEG and 20 percent smaller than WebP, and it supports transparency. Smaller images load faster and improve page speed metrics.

### Which quality value should I use?

Quality runs from 1 to 100 and defaults to 50, which already looks close to the original for most photos because AVIF quality numbers are not comparable to JPEG ones. Try 40 to 60 for web photos and 70 or more for images with fine text or detail.

### What does the effort setting do?

Effort runs from 0 to 5 and defaults to 4. Higher effort lets the encoder search longer for a smaller file at the same quality, while lower effort encodes faster. The maximum is 5 because higher levels take many times longer for only a few percent of savings.

### Does the AVIF Compressor keep transparency?

Yes, the alpha channel is encoded along with the image, so transparent PNG and WebP uploads stay transparent. Soft shadows and anti-aliased edges keep their partial transparency, unlike GIF or JPEG.

### Which browsers support AVIF?

Chrome, Edge, Firefox and Opera support AVIF, and Safari supports it from version 16 on macOS and iOS. Older browsers need a JPEG or WebP fallback, for example with the HTML picture element.

### Which formats can I upload?

You can upload JPEG, PNG, GIF, WebP, TIFF and AVIF files up to 5 MB, and the result is always AVIF. Animated GIF and WebP files are reduced to their first frame.

### Are there size limits?

Uploads can be up to 5 MB. Images wider or taller than 4000 pixels are scaled down to fit within 4000 by 4000 pixels. Encoding stops after 60 seconds, which only very large images at high effort can reach.

### Is metadata kept in the AVIF file?

No, EXIF and GPS data and color profiles are removed and colors are converted to sRGB. The EXIF rotation is applied to the pixels first, so photos stay upright.

### What color settings does the encoder use?

The encoder writes 8-bit color with full 4:4:4 chroma resolution, which keeps colored text and sharp edges crisp. This works in every browser that supports AVIF.

### Why is AVIF encoding slower than JPEG?

AV1 compression searches many prediction and transform options to find the smallest representation, which takes more processing than JPEG. A few seconds is normal for large photos. Lower the effort value when speed matters more than the last few percent of file size.

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