Add your WEBP file
Drop one or more .webp files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
WEBP to AVIF
Converting a .webp image to .avif re-encodes the pixels for a different balance of size, quality, and support. Free, private, and validated — the file never leaves your browser.
100% private for supported formats
Runs on your deviceConvert supported files
Drop WEBP files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting WebP image to AVIF image
Converting a .webp image to .avif re-encodes the pixels for a different balance of size, quality, and support. A .webp file is Google's web-oriented image format, offering both lossy and lossless compression plus alpha and animation in one container. At equivalent visual quality, .webp files typically undercut JPEG by 25-35 percent, which is why CDNs and site optimizers convert to it aggressively.
An .avif file stores a still image (or sequence) coded with the AV1 video codec inside a HEIF-derived container. It is currently among the most efficient image formats deployed on the web, routinely beating JPEG by half at similar quality while adding HDR, wide gamut, and alpha. For this route the practical draw is best-in-class compression among widely supported web formats and 10/12-bit HDR and wide-gamut color, which JPEG cannot represent — balanced against encoding is much slower than JPEG or WebP, especially at high effort settings, which is worth knowing before you commit a large batch.
Why convert WEBP to AVIF?
The practical trigger for this conversion is usually a mismatch: with .webp, mandatory 4:2:0 subsampling in lossy mode caps color fidelity below high-quality JPEG or AVIF. Switching to .avif buys you best-in-class compression among widely supported web formats, which is why it is the better fit for serving hero images and photo galleries where bandwidth savings are significant. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
WEBP vs AVIF at a glance
| Aspect | WebP image (.webp) | AVIF image (.avif) |
|---|---|---|
| Format type | Lossy — discards detail it judges invisible to shrink files | Lossy — discards detail it judges invisible to shrink files |
| How it stores data | lossy mode encodes VP8 intra frames with block prediction; lossless mode uses its own dedicated coding with spatial predictors and color transforms | encodes AV1 intra frames; both lossy and a mathematically lossless mode are defined |
| Strongest at | serving photos and graphics on websites where bandwidth and Core Web Vitals matter | serving hero images and photo galleries where bandwidth savings are significant |
| Weak spot | mandatory 4:2:0 subsampling in lossy mode caps color fidelity below high-quality JPEG or AVIF | encoding is much slower than JPEG or WebP, especially at high effort settings |
| Metadata | eXIF and XMP travel in dedicated RIFF chunks and ICC profiles are supported, though a fair amount of conversion software strips metadata by default when writing WebP | eXIF and XMP are stored as metadata items in the HEIF container alongside ICC profiles or CICP color signaling, and mainstream encoders preserve them on conversion |
Pick AVIF as the output
Select .avif in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if AVIF is selectable, the route is real and validated.
Convert on your device
Press Convert. Decoding and re-encoding happen on your device using the browser's native image pipeline and hand-tuned encoders.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid AVIF file. Outputs keep the original filename with the .avif extension.
WEBP to AVIF questions, answered
Will converting WEBP to AVIF lose quality?
A second lossy step always costs a little, because webp is lossy-oriented and avif is lossy-oriented and each encoder discards detail differently (generation loss). At the default quality the difference is rarely visible; avoid repeated round-trips between .webp and .avif.
Is it private to convert WEBP files here?
Yes — the .webp file is processed inside your browser tab and never uploaded. Decoding and re-encoding happen on your device using the browser's native image pipeline and hand-tuned encoders. Close the tab and the file is gone from memory.
Where will the AVIF file work?
Chrome 85+ (2020), Firefox 93+ (2021), and Safari 16+ (2022) render AVIF natively, covering the overwhelming majority of current browsers. On the desktop, macOS 13+ and Windows (via the AV1 Video Extension) preview it, but plenty of older editing and printing software cannot open it yet.
Will the AVIF file be bigger or smaller than my WEBP?
It depends on the content: encodes AV1 intra frames; both lossy and a mathematically lossless mode are defined. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my WEBP file?
In .webp, eXIF and XMP travel in dedicated RIFF chunks and ICC profiles are supported, though a fair amount of conversion software strips metadata by default when writing WebP. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.
Can I convert AVIF back to WEBP?
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .webp → .avif → .webp is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.