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: HEIC → WebP (any input still accepted)
Asset Melt Studio is a HEIC to WebP converter that runs entirely on your device. HEIC decodes to pixels via libheif, then encodes to WebP locally — useful when the destination is a website rather than email or print.
Drop one HEIC or a whole folder — the pipeline is already set to WebP using the official WebP encoder. That is the HEIC to WebP workflow people search for: convert HEIC to WebP without an upload, then resize, crop, or hit a size budget (when the codec allows) before you download.
Input is not locked to HEIC: you can still open JPEG, PNG, WebP, AVIF, HEIC, GIF, and more in the same session. The HEIC to WebP URL simply pre-selects WebP so heic to webp jobs start in one click.
An outdoor iPhone photo published on a marketing site.
~89% smaller
Before · HEIC2.4 MB — Camera roll
After · WebP270 KB — Web delivery
Step 1
You are already on the HEIC to WebP converter. Output is pre-selected as WebP. You can still drop mixed formats — the HEIC to WebP URL is a starting point, not a file-type lock.
Step 2
Drag HEIC images onto the studio, click to choose, or paste. Folder drops queue nested images. Then process — HEIC to WebP encoding runs in Web Workers on this device.
Step 3
Use the before/after scrubber until the HEIC to WebP result looks right. Adjust quality, crop, or resize, then download one WebP or a ZIP of the batch.
| Topic | HEIC | WebP |
|---|---|---|
| Input | HEIC Camera roll | WebP for the web |
| Decode | libheif → ImageData | Then official WebP encoder |
| Size budget | N/A on HEIC | Supported on WebP |
| Universal share | No (Windows often fails) | Better, not email-universal |
| Lossless from HEIC? | No (camera HEIC is lossy) | WebP encode is lossy |
HEIC to WebP is the “iPhone photo, web delivery” path. You avoid uploading Camera roll files to a random converter, and you get a format CDNs like.
No JPEG bounce before WebP — libheif feeds the encoder directly. Camera roll HEIC is still a lossy capture; this is a private, local publish step.
Prefer this over HEIC to PNG for websites. Prefer HEIC to JPG when the host only takes JPEG.
| Source | Before | After | Note |
|---|---|---|---|
| iPhone → web card | ~2.5 MB HEIC | ~280 KB WebP | Quality ~80 |
| iPhone → 100 KB cap | ~2.5 MB HEIC | ~95 KB WebP | Size budget |
| iPhone → AVIF instead | ~2.5 MB HEIC | Often smaller AVIF | See HEIC to AVIF |
Drop HEIC. libheif decode, then WebP encode. Size budget works on the WebP.
Strip GPS for public pages. Inspect tags on the HEIC before encode.
Also export JPEG if you need a fallback folder in the ZIP.
Personal sites, docs, and shops that accept WebP.
Shrinking a vacation folder for a gallery without a server.
Skip HEIC to WebP for institutions that still demand JPG.
Treat quality like a normal photo WebP (75–90). Do not crush quality further unless you must hit a tiny budget.
Size budget is the right tool for “under 200 KB” forms that accept WebP.
Resize to display size × 2.
Also export AVIF for modern `<picture>` if encode time is OK.
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 HEIC to WebP job — the converter never needs your files on a server.
Upload compressors send your bitmap to someone else’s API. Asset Melt keeps heic to webp on this device. Session replay, if sampled, is UI-only and does not include image pixels.
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