What's the difference between PNG and JPEG XL?

PNG is a lossless raster format that supports transparency. JPEG XL is a modern, royalty-free image format with state-of-the-art compression.

What quality should I pick?

For JPEG XL, quality 75-85 is the sweet spot — small files with no visible difference from the original. Lower than 60 starts to show artifacts. Higher than 90 mostly just makes the file bigger.

Why convert away from PNG?

PNG is a lossless raster format that supports transparency. Where it falls down: photographs and large naturalistic images (file size is huge); anywhere bandwidth or page-weight matters (use WebP or AVIF instead). JPEG XL addresses that for most workflows.

When is JPEG XL the right format?

JPEG XL is a good choice for: high-quality archival images at small sizes; losslessly shrinking existing JPEG libraries; workflows where you control decoding (apps, pipelines). It is a poor choice when broad web delivery today (inconsistent browser support).

Anything surprising about PNG or JPEG XL?

PNG-8 uses a palette of up to 256 colors and is much smaller than PNG-24, but loses gradient fidelity. And on the JPEG XL side: JPEG XL can recompress a JPEG losslessly ~20% smaller and restore the exact original.

Does this work on mobile?

Yes. The drop zone falls back to your phone's file picker, and conversions run on-device just like desktop. Large files may be slower on mobile due to CPU and memory constraints, but the workflow is identical.

What's the maximum file size?

No hard limit — the browser handles it. Files under 50MB convert in a few seconds. Larger files work but may take longer as the browser allocates memory. If you hit issues, batch in smaller groups.

Convert PNG to JPEG XL

Convert PNG to JPEG XL for smaller files with no visible quality loss. PNG's transparency is preserved. Free, in your browser.

Drop images to convert

PNG, JPG, WebP, AVIF, JPEG XL, TIFF, BMP, GIF, SVG, HDR, ICO — any combination

Files stay on your device. Open DevTools' Network tab to verify.

Output format

JPEG XL

Quality82%

Overview

Why convert PNG to JPEG XL

JPEG XL files are typically much smaller than PNG at equivalent quality — usually the main reason to make this conversion. Smaller files mean faster page loads, smaller email attachments, and less storage. PNG's transparency is preserved.

Comparison

PNG vs JPEG XL: what actually differs

PNG compared with JPEG XL across encoding, fidelity, file size and support.
Attribute	PNG	JPEG XL
Compression	Lossless	Lossy or lossless
Transparency	Yes	Yes
Animation	No	Yes
Typical file size	Very large	Small
Browser support	Universally supported in every browser since the late 1990s.	Limited — Safari 17+ supports it; Chrome and Firefox are still behind flags or pending. Great for archival and apps that control their own decoder.

How to

How to convert PNG to JPEG XL

01
Drop your PNG files
Drag one or more PNG files onto the dropzone above, or click to browse. Files stay on your device — nothing uploads.
02
Convert in your browser
convert.now decodes each PNG and re-encodes it as JPEG XL via WebAssembly. The conversion runs in a Web Worker so the page stays responsive.
03
Download the result
Download a single JPEG XL file or, for batch conversions, a zip of all converted files. Filenames preserve the originals.

Why here

Why convert.now

Private
Files stay in your browser. No upload step. Nothing for anyone to see.
Fast
No queue, no upload wait. Conversion starts the moment you drop a file.
Free
No ads. No file-count limit. No sign-up wall. Just the converter.

FAQ

PNG to JPEG XL: common questions

No. The conversion from PNG to JPEG XL runs entirely in your browser using WebAssembly. Files never leave your device. Open DevTools' Network tab if you'd like to verify — there are no network requests with file contents.

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Last updated 27 August 2026

Why convert PNG to JPEG XL

PNG vs JPEG XL: what actually differs

How to convert PNG to JPEG XL

Drop your PNG files

Convert in your browser

Download the result

Why convert.now

PNG to JPEG XL: common questions

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