Convert HEIC to AVIF — free, private, in your browser
Decoded with ImageMagick WASM, encoded with libavif — entirely on your device. No upload, no queue, no watermark.
Why convert HEIC to AVIF?
Convert HEIC (the iphone photo format. half the size of jpeg — until you try to open it anywhere else) to AVIF — transparency carries over. Drop files below: decoding and encoding run entirely in your browser via WebAssembly, so images are never uploaded to a server.
How to convert HEIC to AVIF
- 1Drop your HEIC files onto the tool above (or click to browse, or paste from the clipboard). Batches are fine.
- 2AVIF is pre-selected as the output. Adjust the quality slider — 80 is visually lossless for most photos. Optionally cap the maximum dimension to also downscale.
- 3Each file converts in your browser and shows its new size. Download files individually or grab everything as a ZIP.
HEIC vs AVIF
| HEIC | AVIF | |
|---|---|---|
| Introduced | 2015 (MPEG / Apple (adoption)) | 2019 (Alliance for Open Media) |
| Compression | Lossy | Lossy + lossless |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| HDR / wide gamut | Yes | Yes |
| Browser display | Partial support | All modern browsers |
| Typical use | iPhone camera originals | Hero images and photography on fast websites |
About HEIC full guide →
The iPhone photo format. Half the size of JPEG — until you try to open it anywhere else.
About AVIF full guide →
The best compression available in browsers today — often half the size of JPEG.
Frequently asked questions
Is it safe to convert HEIC to AVIF online?+
With EditItAll, your files are never uploaded: decoding and encoding run inside your browser using WebAssembly (ImageMagick compiled to WebAssembly to decode, Squoosh-grade codecs (MozJPEG, libwebp, libavif, libjxl, OxiPNG) to encode). The images stay on your device from start to finish, and the whole thing works offline once the page has loaded.
Will converting HEIC to AVIF lose quality?+
AVIF supports both lossy and lossless modes. At the default settings EditItAll uses visually transparent quality; push the slider to 100 for lossless where supported.
Is there a file size or count limit?+
No hard limits and no accounts — processing uses your own device's memory and CPU, so very large images are only constrained by your browser (multi-hundred-megapixel images may fail on low-memory devices). Batch as many files as you like; they are processed in sequence.
Can I convert AVIF back to HEIC?+
Not in the browser: no WebAssembly encoder exists for HEIC. You can convert AVIF to any of: JPEG, PNG, WebP, AVIF, JPEG XL, GIF, TIFF, BMP, ICO, QOI.