Convert JPG to AVIF

Turn JPG files into AVIF without uploading anything. Drop in one image or a whole folder, adjust the quality, and download the results.

Drop JPG images hereAdd one image or a whole batch, then pick your settings.Choose JPG imagesPNG, JPG, WebP, and AVIFStays on your device, never uploaded

What this tool does

  • JPG to AVIF at full resolution
  • Batch conversion with a single zip download
  • Quality control for the output file size
  • Runs fully in the browser, no upload
  • Free, no signup, no watermark

What JPG is good at

JPG compresses by discarding the fine detail the eye is least sensitive to, which works extremely well on photographs and continuous-tone images and poorly on sharp text and flat colour. It has no alpha channel, and every re-save compounds the artifacts of the previous one, so it is a format to export to rather than to work in.

What AVIF gives you

AVIF applies the AV1 video codec to still images, which buys it the best compression in general use: lossy and lossless modes, an alpha channel, and 10 and 12-bit colour with HDR. Files are commonly half the size of an equivalent JPG and a small fraction of a PNG. Encoding is slower than the older formats, which is the price of the ratio.

Converting JPG to AVIF

AVIF typically halves a JPG at the same visual quality, which makes it the biggest single page-speed win available for a photo-heavy site. Transparency survives the conversion, so a JPG with a cut-out subject stays cut out as AVIF. Re-encoding always costs something, so convert from the highest-quality copy you have rather than from an already-compressed export. The result supported by Chrome, Firefox, and Safari 16 and later, but not by much older software.

Frequently asked questions

AVIF typically halves a JPG at the same visual quality, which makes it the biggest single page-speed win available for a photo-heavy site.

AVIF uses the AV1 video codec, which spends much more computation searching for the smallest encoding. This tool runs the AV1 encoder as WebAssembly in your browser, so a large photo can take a few seconds where JPG or WebP takes a fraction of a second.

No. Because the conversion happens on your own machine there is no server quota to hit. The practical limit is your device's memory, and files are processed one at a time to keep that manageable.

No. Every tool on this page runs entirely in your browser using the Canvas and Web Worker APIs. Your files are read from disk, processed in the tab, and written straight back to your downloads folder. Nothing is uploaded, stored, or logged, which also means the tool keeps working if you go offline after the page loads.

It is completely free with no signup, no account, no daily limit, and no watermark. Screenshot Studio is open source under the Apache 2.0 licence.

Related tools

AVIF to JPGJPG to PNGJPG to WebPPNG to AVIFWebP to AVIFConvert Image

Need more than a quick fix? The screenshot editor adds backgrounds, frames, and shadows. You can also remove an image background.