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Part of:Image Formats Explained: JPG, PNG, WebP, AVIF and More

PNG to JXL Converter

Convert PNG to JXL in your browser for the smallest lossless graphics. Keep every pixel with dramatic savings, batch ready.

  • No file limits
  • No registration
  • Free forever
  • Images never leave your browser
PNGJXL
Bulk uploadTurn on to pick several images at once

Drop images here

or paste from clipboard (Ctrl/⌘ + V)

Supported formats: JPG, PNG, WebP, AVIF, SVG

Processing…

Your images never leave your browser

All processing happens locally on your device. Nothing is uploaded to a server, stored, or tracked.

Compress PNGs into JPEG XL. Lossless mode keeps every pixel with dramatic size savings for web delivery, often 20 to 30 percent smaller than PNG.

How it works

Why convert PNG to JXL?

Compress PNGs into JPEG XL. Lossless mode keeps every pixel with dramatic size savings for web delivery, often 20 to 30 percent smaller than PNG.

How JXL compares to PNG

JXL is generally more compact than PNG. The main differences are file size, quality characteristics, and transparency support.

Quality recommendations

For JXL output, start at the lossless preset and adjust to taste. A lower quality setting shrinks the file further; a higher one keeps more detail. Keep the original PNG file for archival edits.

Is conversion private?

Your PNG is compressed to JXL losslessly in your browser. Nothing is uploaded to a server.

Batch convert PNG to JXL

Convert a group of PNGs to JPEG XL in one pass. Free, private, batch ZIP, and processed locally in your browser.

Frequently asked questions

Is JXL lossless smaller than PNG?

Usually yes. JPEG XL lossless compresses graphics and screenshots about 20 to 30 percent smaller than PNG does with perfect fidelity.

Should I use lossless or lossy JXL for PNG graphics

Lossless keeps every pixel for logos and screenshots, lossy shrinks photos much further with small quality loss. Pick based on edit needs. For wider support try PNG to WebP for wider support.

Can I batch convert many PNGs without uploading

Yes. Add your PNG folder, convert together to JXL, and download a ZIP. All processing happens locally in your browser.

Will converting to JXL degrade quality?

Every JXL re-encode discards a little detail. Keep your original file if you might re-edit it later.