BriskFile

Convert WEBP to AVIF

Drop your WebP files below. They are converted on your own device and never sent anywhere.

Convert to AVIF when the image is going on a site you control, you can serve a WebP or JPEG fallback, and page weight matters. It is converted by your own browser here, so the file is never uploaded.

Nothing is uploaded. Your files are read by this page and processed by your own processor. Open the Network tab and watch — you will not see them leave.

WebP and AVIF, and why you would move between them

This is a conversion done for one reason: making a website faster. AVIF compresses roughly 20–30% better than WebP at the same visual quality, and on an image-heavy page that is a real difference to how quickly it loads and to what Core Web Vitals reports.

It is worth being clear about what it is not for. AVIF is not more compatible, not easier to open, and not better for sending files to people. Every current browser reads it, but a great deal of desktop and business software still does not. Convert to AVIF when the destination is a web page you control and you can offer a fallback; convert away from it when the destination is a person.

Things that catch people out

  • AVIF encoding is markedly slower than WebP — noticeably so on a large image and on a phone. This is a one-off cost at build time, but it is not instant.
  • The image is decoded and re-encoded, so this is a second lossy pass. Where you still have the original, encoding AVIF from that rather than from the WebP gives a better result.
  • Serve AVIF with a fallback. A bare <img src="photo.avif"> shows nothing at all to a browser that cannot read it, and there are still some in use.
  • On flat graphics and screenshots the saving is much smaller than on photographs, and sometimes AVIF is larger. Check before converting a whole folder of logos.

Related conversions

Questions

How much smaller is AVIF than WebP?

Typically 20–30% on photographs at matching quality. On graphics with flat colour and hard edges the gap narrows sharply, and occasionally reverses.

Can every browser display AVIF?

Every current one, on desktop and mobile. Older installations and some embedded browsers cannot, which is why a fallback still matters — the failure mode is a blank space rather than a degraded image.

What BriskFile will not do to you

  • Your files never leave your device

    Every conversion runs in your browser. Open DevTools, watch the Network tab, and you will see no upload — because there is not one.

  • No account, no email, no watermark

    Nothing to sign up for and nothing stamped on your images. There is no step between choosing a file and getting it back.

  • No limits at the download button

    No daily cap, no file counter, no "upgrade to download". If the tool starts a job, it finishes it.

  • Checkable, not just claimed

    Open the Network tab and convert something — nothing goes out. Or load the page, disconnect, and watch it keep working: the tool is already on your machine, and your file never leaves it.