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JPG to AVIF
Convert a JPEG photo to AVIF with adjustable quality and compression.
JPG
AVIF
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Choose one supported still image within the displayed limits.
- Choose lossy or lossless encoding, quality, color detail and speed.
- Choose Encode AVIF. The first run downloads and verifies the local engine. Cancel stops the worker.
- Review dimensions and file-size change, then download. Reset clears the selected file and output.
Examples
Encode a transparent PNG for a smaller web image, comparing quality and output size.
Limitations
- One still image up to 20 MiB, 4 million pixels and 4,096 pixels per side; AVIF items up to 8 million total pixels. Output up to 32 MiB. Native memory is capped at 512 MiB and the download/worker deadline is 120 seconds.
- Animated inputs are rejected. AVIF compression requires browser AVIF decoding and exports the primary image only.
- Output is 8-bit sRGB with source orientation applied by the browser. Source EXIF, XMP, ICC profiles, HDR gain maps and auxiliary images are not copied. HDR inputs are converted by the browser.
- Lossless mode preserves decoded pixels, not original compressed source bytes. Browser color conversion and alpha rounding may change source values. Alpha is always encoded losslessly.
- Output may be larger than input. The result reports actual file sizes and percentage change. Slower encoding can reach the deadline on large images.
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