Multiconversor

Convert JPG to AVIF

Free, no account, no watermark. Your JPG files are turned into AVIF inside this browser tab — they are never uploaded to a server.

  • Nothing leaves your device
  • No account, no email
  • Free, and no watermark

Drop your files here

Tap to pick your photos

or

Choose files

Up to 30 files at a time · 60 MB per file

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Why convert JPG to AVIF?

The most aggressive size reduction available for web delivery — often 50% or more off a JPEG at the same perceived quality. The trade-offs are slower encoding and no support in older browsers.

AVIF is the pick when bandwidth matters most and your audience is on current browsers. A hero image can often be cut to a third of its JPEG size with no visible difference.

How to convert JPG to AVIF

  1. Drop your JPG files into the box above, or click to pick them from your device.
  2. Adjust the quality slider if you want a smaller file or a sharper result.
  3. Hit convert. The work happens inside your browser, so it takes a second or two per image.
  4. Download each AVIF file, or grab them all in one ZIP.

About the formats

JPG — Joint Photographic Experts Group

JPEG has been the default photo format for more than thirty years, and that longevity is the entire point: there is no device, browser, printer or application that cannot open one. It discards detail your eye is unlikely to miss, which keeps files small — but it repeats that loss every single time you re-save.

Strengths

  • Opens on every device, browser, printer and photo lab in existence
  • Small files, with a quality dial you control
  • The safest possible thing to attach, upload or hand to someone else

Limitations

  • Lossy, and the damage accumulates with every re-save
  • No transparency — see-through areas are flattened onto a solid colour
  • Noticeably heavier than WebP or AVIF at matched quality

AVIF — AV1 Image File Format

AVIF is the newest format here, built on the AV1 video codec. It beats WebP by another 20–30% on size, handles HDR and wide colour gamut, and supports transparency and animation. Encoding is slow and desktop support is still patchy, but for images delivered over the web it is the most efficient option browsers actually understand.

Strengths

  • The smallest files of any format with real browser support
  • HDR and 10-bit colour, so gradients do not band
  • Transparency and animation included

Limitations

  • Slow to encode compared with JPEG or WebP
  • Older browsers and most desktop applications cannot open it
  • Editing software support remains thin
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Frequently asked questions

Are my photos uploaded anywhere?

No. The conversion runs entirely in your browser using WebAssembly and the Canvas API. Your images are never sent over the network, never touch a server, and are dropped from memory as soon as you close the tab.

Will I lose quality?

AVIF is a lossy format, so some data is discarded. At the default quality of 85% the difference is invisible on screen for most photos. Raise the slider if you plan to print or edit the result.

Is there a limit or a cost?

It is free and there is no account. The only limits are practical: 30 files at a time and 60 MB per file, so that the tab does not run out of memory on a phone.

Can I convert several files at once?

Yes — drop in up to 30 files and they are processed one after another, then downloaded individually or as a single ZIP.

Does it work offline?

Once the page has loaded, yes. The converter itself needs no network connection, so you can drop the connection and keep converting.

Does it work on a phone?

Yes, on iOS and Android. Large batches are slower on a phone because the decoding happens on the device, so stick to smaller groups if things feel sluggish.

Other conversions

Same tool, different formats.