Drop a folder, or click to choose images
JPEG · PNG · WebP · AVIF · HEIC · SVG · GIF · JXL · TIFF
Files never uploaded · 100% client-side · I cannot see your photos · Privacy policy
Pipeline ready: WebP → AVIF (any input still accepted)
Asset Melt Studio is a WebP to AVIF converter that runs entirely on your device. If you already ship WebP, AVIF is the next step for LCP-critical images — keep WebP as a fallback rather than deleting the library.
Drop one WebP or a whole folder — the pipeline is already set to AVIF using libavif / AV1 stills. That is the WebP to AVIF workflow people search for: convert WebP to AVIF without an upload, then resize, crop, or hit a size budget (when the codec allows) before you download.
Input is not locked to WebP: you can still open JPEG, PNG, WebP, AVIF, HEIC, GIF, and more in the same session. The WebP to AVIF URL simply pre-selects AVIF so webp to avif jobs start in one click.
A landscape WebP hero upgraded to AVIF.
~50% smaller
Before · WebP400 KB — Existing web delivery
After · AVIF200 KB — Same dimensions
Step 1
You are already on the WebP to AVIF converter. Output is pre-selected as AVIF. You can still drop mixed formats — the WebP to AVIF URL is a starting point, not a file-type lock.
Step 2
Drag WebP images onto the studio, click to choose, or paste. Folder drops queue nested images. Then process — WebP to AVIF encoding runs in Web Workers on this device.
Step 3
Use the before/after scrubber until the WebP to AVIF result looks right. Adjust quality, crop, or resize, then download one AVIF or a ZIP of the batch.
| Topic | WebP | AVIF |
|---|---|---|
| Role | Current web delivery | Next-gen still |
| Re-encode cost | Already lossy | Second generation unless source is high quality |
| Size budget | Supported | Supported |
| Alpha | Yes if present | Yes if present |
| Support | Very wide | Modern; keep WebP |
WebP to AVIF is an upgrade path, not a replacement for every asset. Re-encoding a lossy WebP into AVIF cannot recover detail the WebP already discarded.
Prefer WebP to AVIF when the WebP is a high-quality intermediate or when you still have the original JPEG/PNG. If the WebP is already 40 KB, another codec will not magically restore texture.
Use this page to standardize on AVIF for new deploys while Also export keeps WebP in the same ZIP.
| Source | Before | After | Note |
|---|---|---|---|
| High-quality WebP photo | 420 KB WebP | ~210 KB AVIF | Worth it for heroes |
| Already tiny WebP | 48 KB WebP | ~36 KB AVIF | Small win |
| Transparent UI WebP | 160 KB WebP | ~90 KB AVIF | Check edges |
Drop WebP files. Output is AVIF. Decode locally, then libavif encode.
Animated WebP is not a first-class path here — Asset Melt is a stills studio. Treat this as still WebP to AVIF.
Compare with the scrubber; if the AVIF looks softer, the source WebP may already be too aggressive.
Migrating a WebP CDN folder to AVIF + WebP `<picture>`.
When analytics show modern Chrome/Safari share and you want smaller LCP.
Skip WebP to AVIF if you still have the camera original — convert that instead.
Do not stack heavy loss. If the WebP was saved at quality 60, AVIF cannot invent detail. Start from the original when you can.
Keep WebP via Also export so you are not AVIF-only.
Avoid extra sharpen on already-compressed WebP.
Size budget still works on the AVIF output.
Image processing is 100% client-side in your browser with WebAssembly. Your photos are not uploaded, I cannot see or recover them, and sampled session replay is UI-only and does not include image pixels (media is blocked). The site still sends usage analytics and crash reports — details are on the privacy page. That includes every WebP to AVIF job — the converter never needs your files on a server.
Upload compressors send your bitmap to someone else’s API. Asset Melt keeps webp to avif on this device. Session replay, if sampled, is UI-only and does not include image pixels.
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