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HEIC to AVIF converter
Free HEIC to AVIF converter in your browser. Files stay on this device. Nothing is uploaded.
Drop images here
or click to choose. Paste works too.
Files never leave this device. Conversion runs in your browser.
HEIC orientation is always baked in on decode; Auto-orient cannot be turned off for HEIC.
Why convert HEIC to AVIF?
HEIC is lossy (iPhone photo workflows that need a widely supported export). AVIF is lossy (cutting-edge web images when browser support is acceptable). Converting HEIC to AVIF remaps pixels into the target container in your browser. AVIF can store transparency even if the HEIC source did not.
What changes in the file
- Both formats are lossy; a fresh encode may change fine detail and file size
- AVIF can keep an alpha channel for later edits
- HEIC orientation is baked in during decode
- Conversion runs on this device — the file is not uploaded
How to convert HEIC to AVIF
- Drop one or more HEIC files onto the converter (or pick them from disk).
- Confirm the output is set to AVIF, then adjust quality, size, or metadata if needed.
- Download the converted AVIF file — processing never left your browser.
About HEIC
HEIC (often from iPhone cameras) packs efficient HEIF/HEVC stills. It keeps high visual quality at small sizes, but desktop and web support is uneven, so people often convert HEIC to JPG or PNG.
About AVIF
AVIF is a next-generation image format based on the AV1 video codec. It typically yields smaller files than WebP or JPG at similar quality and supports transparency and high bit depth.
Common questions
Is this HEIC to AVIF converter free?
Yes. Formatly converts HEIC to AVIF in the browser at no charge and without an account.
Do you upload my HEIC files?
No. Decoding and encoding run locally with browser APIs and WebAssembly codecs when needed. Files stay on this device.
Will converting HEIC to AVIF reduce quality?
AVIF is lossy, so you trade some detail for smaller files. Use a higher quality setting when fidelity matters.