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Convert.jpg · .jpeg

Convert JPG to JXL online

100% localFiles never leave your device — no upload, no account, no tracking.
About JPG to JXL

Convert JPG or JPEG photos to JPEG XL (JXL), the next-gen format designed to succeed JPEG with smaller files at the same quality. Pick a quality level and get a modern, efficient image ready for apps and pipelines that support JXL.

Encoding happens locally in your browser via WebAssembly. The source photo never leaves your device, so the entire conversion is private and offline-capable.

How it works
  1. 01

    Add a JPG

    Drop your JPG or JPEG file onto the page or pick it from your device.

  2. 02

    Set quality

    Choose the JXL quality level to balance size and detail.

  3. 03

    Convert

    Click Convert to encode a JXL locally in your browser.

  4. 04

    Download

    Save the JXL image.

Features
next-gen formatsmaller filesadjustable quality
Frequently asked
How does the JPG to JXL converter work?
Convert JPG or JPEG photos to JPEG XL (JXL), the next-gen format designed to succeed JPEG with smaller files at the same quality. Pick a quality level and get a modern, efficient image ready for apps and pipelines that support JXL.
Are my files uploaded to a server?
No. Everything runs entirely in your browser using local JavaScript and WebAssembly. Your files never leave your device.
Does it cost anything or require an account?
No. The converter is free, needs no sign-up, and runs locally in your browser.
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