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About HEIC To AVIF Converter Online
Overview
HEIC To AVIF Converter Online. Convert iPhone HEIC/HEIF photos to AVIF: upload a file, adjust quality or size if needed, then download the converted image.
Tips
Exports are generated on demand for each request. If you need both a tiny preview file and a print-quality master, run twice with different presets rather than reusing one aggressive compression for every channel.
How to use this tool
How to convert an image
Add your file
Use the file tab to pick an image, or paste a data URL / base64 string. Check the max size hint if your photo is large.
Pick preset and quality
Choose a preset (web, lossless, small, or document). Open Advanced if you want to fine‑tune JPEG/WebP/AVIF quality or max width/height.
Run the conversion
Press the convert button. The image is processed on the server for this request only, then the result appears below.
Save the output
Use the download link on the result card. Re‑run with different presets if you need a smaller file or sharper detail.