Encode your PNGs to JPEG XL right here in your browser — smaller files, transparency preserved. Great for storage and the Apple ecosystem; note that .jxl won't open in most browsers yet.
.png · up to 10 at once · 50 MB each
Four steps, a few seconds, zero uploads.
Drag images onto the box above, or click Browse to pick them from your device.
Pick a JPEG XL quality level — higher keeps more detail, lower makes smaller files. The default suits most images.
Latch encodes each PNG to JPEG XL, right in your browser — instantly and offline.
Save them one at a time, or grab everything at once in a single zip. That's it.
PNG is lossless and universal, but the files are large. JPEG XL is a modern format that stores the same image far smaller — often half the size or less — while keeping the alpha channel, so transparency survives the conversion. For archiving a photo library or squeezing more into limited storage, that's a meaningful saving.
The honest catch is compatibility. As of 2026, JPEG XL only opens natively in Safari and recent Apple devices — Chrome, Edge, Firefox, and many apps still can't display a .jxl file. So this conversion makes sense for storage, archiving, or an all-Apple workflow, not for sharing a file that has to open anywhere.
If you need the picture back in a universal format later, it converts straight back with JXL to PNG. And if broad support matters more than the format itself, PNG to AVIF gives you similar compression in a format every current browser can open today.
JPEG XL is usually far smaller than PNG — often 50% or more — because it uses a modern codec instead of PNG's older lossless compression. Savings are largest on photographic or complex images; flat graphics with few colours see smaller gains. Transparency is kept either way.
No — this is the main catch. As of 2026 only Safari and recent Apple devices open JPEG XL directly; Chrome, Edge, Firefox, and most apps do not. JPEG XL is best for storage, archiving, or the Apple ecosystem. If you need a file that opens anywhere, keep the original PNG or try PNG to AVIF instead.
Yes. JPEG XL supports a full alpha channel, so any transparency in your PNG is preserved in the .jxl output — you get the smaller file without losing transparent areas.
This tool encodes with an adjustable quality setting, which is lossy — raise the slider for near-lossless results, lower it for the smallest files. JPEG XL also has a true lossless mode; if you need an exact pixel-for-pixel copy, keep your original PNG.
No. Every PNG is encoded to JPEG XL by your own browser. Nothing is sent to a server — in fact, the tool keeps working even with your Wi-Fi switched off.