ConvertOwl

Convert JPG to AVIF — Smallest Modern Format

AVIF achieves 40–55% smaller files than JPEG at the same visual quality, making it the best format for image-heavy websites and applications. This tool converts your JPEG photos to AVIF in your browser — with automatic EXIF orientation correction — so portrait photos always come out right-side up. No upload, no account required.

70%

Drop files here

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Up to 50.0 MB per file

How to use this tool

  1. Add your JPEG photos

    Drop JPG or JPEG files onto the converter. EXIF orientation tags are read automatically, so portrait-mode photos are rotated correctly in the output.

  2. Choose quality

    AVIF at 70% quality looks comparable to JPEG at 90%. Start with the default and lower it further for aggressive size reduction. Even at 55% quality, AVIF often looks better than JPEG at 80% due to superior compression.

  3. Convert

    Click Convert. AVIF encoding is slow (10–30 seconds per image) — this is normal. The browser uses a full AV1 software encoder for maximum compression efficiency.

  4. Deploy to your website

    Serve AVIF with a JPEG or WebP fallback using the <picture> element. Your CDN may also do this automatically — check your settings.

Frequently asked questions