To convert HEIF to AVIF, select or drop your .heif picture above, check that AVIF is chosen as the output, and click Convert. Files up to 200 MB are converted right in your browser, so they never leave your device.
What is a HEIF file?
HEIF – High Efficiency image file. HEIF is the container behind HEIC: it can hold pictures compressed with HEVC (the files iPhones save, usually named .heic) or other codecs. Converting gives a picture every program can open.
HEIF Converter →What is an AVIF file?
AVIF – AVIF image. AVIF is a newer picture format based on the AV1 video codec. It gives smaller files than JPG or WebP at the same quality and supports transparency, but it is slower to create and older software cannot open it.
AVIF Converter →How to convert HEIF to AVIF
- Click Select File, or drop your .heif files anywhere on this page. You can add several at once.
- Check that AVIF is chosen as the output format. On this page it is picked for you.
- Click Convert. When a file has to go to our server, the button says Upload and convert instead.
- Click Download next to each file when it's done.
HEIF vs AVIF: how they compare
| HEIF | AVIF | |
|---|---|---|
| Compression | Lossy (usually HEVC) | Lossy or lossless (AV1) |
| Transparency | Yes | Yes |
| Animation | Image sequences | Yes |
| Created by | MPEG, standardized 2015 | Alliance for Open Media, 2019 |
| Best for | Photos from phones and cameras | The smallest photos on modern websites |
Good to know
- Choose a quality in Options: lower numbers make a smaller AVIF with less detail.
- Photos from an iPhone keep their orientation: pictures are turned upright as the camera recorded.
- Tick Remove metadata in Options to leave out information stored in the picture, such as the camera and the place.
Frequently asked questions
Is converting HEIF to AVIF free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my HEIF pictures uploaded anywhere?
Pictures up to 200 MB never leave your device: ConvertKitty converts them inside your browser, with ImageMagick compiled to WebAssembly. Only larger files, or formats your browser cannot handle (camera RAW, PostScript, XPS, LibreOffice and Publisher files, and video or audio), are sent to our server, over an encrypted connection, and deleted 72 hours after the conversion. The button says "Upload and convert" whenever that happens.
How large can the HEIF file be?
Files up to 200 MB are converted right in your browser. Larger files, up to 1 GB, are converted on our server.
Can I change the size or quality of the AVIF?
Yes. Click Options next to the file to set a width and height, choose a quality, remove metadata and more. Only the settings that make sense for HEIF to AVIF are shown.
Can I convert several HEIF files at once?
Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.
Just want to look at it?
Convert HEIF to other formats
- HEIF Converter
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- HEIF to EPS Converter
- HEIF to GIF Converter
- HEIF to ICO Converter
- HEIF to JPG Converter
- HEIF to PDF Converter
- HEIF to PNG Converter
- HEIF to PS Converter
- HEIF to PSD Converter
- HEIF to TIFF Converter
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Convert other pictures to AVIF
- Convert to AVIF
- HEIC to AVIF Converter
- PNG to AVIF Converter
- JPG to AVIF Converter
- WEBP to AVIF Converter
- TIFF to AVIF Converter
- PSD to AVIF Converter
- GIF to AVIF Converter
- BMP to AVIF Converter
- CR2 to AVIF Converter
- NEF to AVIF Converter
All image formats
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