How to Convert Avif to WebP Online
AVIF is the newest, most efficient image format — but that also means many apps, older browsers and tools still cannot open it. WebP hits the sweet spot: nearly as small as AVIF, yet supported almost everywhere modern. Converting AVIF to WebP keeps your files light while making them far more compatible. It all runs in your browser, one file or a whole batch, with a quality slider you control.
Add your AVIF files
Drag in one image or a whole batch. Each is previewed so you can confirm what you are converting.
Set your quality
Choose a WebP quality level. Higher keeps more detail; lower makes the smallest file.
Convert & download
Hit Convert and see the size drop for each file. Save one, or download the whole batch at once.
Why Convert AVIF to WebP
Much wider support
AVIF is still catching up in software and older devices. WebP is supported by every current browser and most editors, so your image just works.
Stays small
WebP compresses almost as efficiently as AVIF, so you keep files light while gaining compatibility — the best of both worlds.
Transparency preserved
Any transparency in the AVIF carries over to WebP's alpha channel, cleanly and without a background added.
Better for sharing now
Send a WebP and far more recipients can open it today than an AVIF, which some devices still show as blank.
Adjustable quality
The quality slider lets you decide the exact balance between file size and sharpness.
Private & instant
Conversion runs on your device — nothing uploaded — and batches finish in seconds.
Choosing the Right WebP Quality
WebP quality is adjustable. At 82–90% the result matches the AVIF's look closely while staying small — a good default for most images. Lower it when the very smallest file matters most.
Because AVIF is already highly compressed, converting to WebP at a sensible quality keeps files light while dramatically widening where they open. Everything runs locally, so you can convert, check and reconvert instantly.
For images destined for older software, WebP is the safer modern choice; for the absolute smallest web file where support allows, the original AVIF may still win.
AVIF vs WebP: Key Differences
| Aspect | AVIF | WebP |
|---|---|---|
| Efficiency | Highest | Very high |
| Software support | Newest / limited | Wide (modern) |
| Transparency | Yes | Yes (alpha) |
| Browser support | Growing | Universal (modern) |
| Best for | Cutting-edge web | Broad modern use |
| Opens in old apps | Rarely | More often |
Frequently Asked Questions
How do I convert AVIF to WebP for free?
Add your AVIF files above, pick a quality level, and press Convert. The WebP downloads appear in seconds — free, no signup, no watermark.
Why convert AVIF to WebP instead of keeping AVIF?
AVIF is the newest format and many apps and older devices can't open it yet. WebP is nearly as small but supported almost everywhere modern, so it's more practical to share.
Will the WebP be much bigger than the AVIF?
Only a little. WebP compresses almost as efficiently as AVIF, so you gain broad compatibility for a small size trade-off.
Does converting keep transparency?
Yes. Any transparency in the AVIF is preserved in WebP's alpha channel.
Will I lose quality?
You control it with the quality slider. At 82–90% the result closely matches the original while staying small.
Are my AVIF files uploaded to a server?
No. The conversion runs entirely inside your browser, so your images never leave your device.
Can I convert several AVIF files at once?
Yes. Add a whole batch and convert them together, then download each WebP individually or all at once.
Do I need to install anything?
No. It works in any modern browser on Windows, Mac, Android or iPhone with nothing to install.
Is this AVIF to WebP converter really free?
Completely free, forever — no account, no watermark, no daily cap and no premium wall.
100% free · No signup · No watermark · Files never leave your browser
Last updated: August 2026 · FlipMyFormat Convert AVIF to WebP
Written and maintained by the FlipMyFormat team · Runs entirely in your browser