Convert HEIC to AVIF
Choose your HEIC file and get a AVIF file in seconds. Nothing leaves your device.
Converter
- FilesOne or many, images and videos mixed
- FolderEvery matching file inside, subfolders included
- ArchiveZIP, RAR, 7z or TAR: convert the contents or the archive itself
Drop files, folders or archives here
Unsupported files are skipped. Nothing is uploaded.
Everything runs in your browser. Files are not uploaded.
About this conversion
Both formats support transparency, so cut-outs and soft shadows stay intact.
Good to know
HEIC can only be read, not written, because of patent and licensing reasons.
Encoding AVIF takes noticeably longer than other formats.
How it works
This conversion uses a compact WebAssembly codec that is loaded only when you select a file, and it runs in a background thread.
Your browser can
- Built-in image codecs
- Hardware video (WebCodecs)
- Multiple threads
- Create AVIF natively
If something is missing, the conversion takes a little longer but still works.
About HEIC / HEIF (High Efficiency Image Format)
HEIC is the photo format of modern iPhones, small but poorly supported outside Apple devices.
- iPhone photos
- Space-saving photo libraries
- Burst and live photos
About AVIF (AV1 Image File Format)
AVIF delivers the smallest files of all common image formats at high quality.
- Best compression of common formats
- Transparency and HDR
- Animation support
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Frequently asked questions
Are my files uploaded to a server?
No. The conversion runs entirely in your browser with local code. Your files never leave your device, and there is no upload.
Is there a file size limit?
There is no limit on our side, but your browser memory is. Images work for very large files; for videos, files above a few hundred megabytes can fail on devices with little memory.
Will the quality suffer?
That depends on the target format and settings. Use the quality option to balance size and detail; lossless targets keep everything the source contained.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox and Safari. Fast hardware paths are used where available, with a compatible fallback otherwise.