Convert images to AVIF
AVIF often gives the smallest files of any widely supported web format. Convert photos and graphics to AVIF in your browser, with transparency kept and a quality slider.
- On-device
- No sign-up
- Batch
- Free, no watermark
Drop images on the plate
or paste with Ctrl/⌘ V
Processed on this device
How it works
- 01Drop, choose or paste images in any supported format.
- 02Set the AVIF quality slider; the default is 60.
- 03Select Process and allow a few seconds per large photo.
- 04Download each AVIF file, or use Download all for a ZIP.
Why use this tool
Very small files
AVIF compresses photos efficiently, often beating WebP and JPG on size at similar visual quality.
Transparency and photos
AVIF handles both photographs and transparent graphics, so one format can cover most of a site’s images.
Encoded on your device
A WebAssembly AVIF encoder runs in a background worker. Your images are never uploaded.
Supported formats
Use cases
Image-heavy landing pages
A portfolio or travel page loads many large photos. AVIF versions cut the transfer size so the first screen appears sooner.
Modern picture elements
Developers serving AVIF first with WebP or JPG fallbacks can generate the AVIF set here from the same source images.
Reducing hosting bandwidth
A site pays for bandwidth on every image view. Smaller AVIF files reduce the bytes sent without shrinking image dimensions.
Technical details
AVIF quality numbers aren’t comparable to JPG’s: the default of 60 in AVIF typically looks good for photos, while JPG defaults to 90. Encoding is noticeably slower than other formats, often seconds for a large photo, so it runs in a background worker and the page stays usable. Big batches take time; you can keep working in another tab while they finish.
Transparency is preserved, colors are converted to sRGB, and EXIF data is not copied. Current versions of the major browsers display AVIF, but many desktop apps, email clients and upload forms don’t, so keep originals and consider WebP or JPG fallbacks. For a perception-tuned approach that picks the quality for you, see Optimize AVIF. For format trade-offs, read AVIF vs WebP.
Your files stay with you
This tool runs entirely inside your browser using Web Workers and WebAssembly. Your images are never uploaded, never stored on a server and never used to train AI. Close the tab and they’re gone. Learn more
Frequently asked questions
Why is AVIF conversion so slow?
AVIF uses a complex encoder that searches hard for the smallest file, so a large photo can take several seconds. Pixellin runs it in a background worker, so the page stays responsive while the batch is processed.
What AVIF quality setting should I use?
Start with the default of 60, which usually looks clean for photos. AVIF’s scale isn’t the same as JPG’s, so a lower number doesn’t mean worse results. Raise it for images with fine text or sharp graphic edges.
Is AVIF better than WebP?
AVIF often produces smaller files at similar visual quality, especially for photos, but it encodes more slowly and is supported by fewer non-browser apps. WebP is faster to create and more widely accepted. Many sites serve AVIF with a WebP or JPG fallback.
Can I open AVIF files on my computer?
Current versions of Chrome, Edge, Firefox and Safari display AVIF, so you can drag one into a browser window to view it. Support in older photo viewers and editing software varies, which is why keeping your originals is wise.
Does AVIF keep transparency?
Yes. AVIF supports an alpha channel, so transparent PNG, WebP and SVG inputs stay transparent. That means logos and cut-out product images can use AVIF as well as ordinary photos.
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