Add your JXL file
Drop one or more .jxl files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
Converting a .jxl image to .png re-encodes the pixels for a different balance of size, quality, and support. Free, private, and validated — the file never leaves your browser.
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.Converting a .jxl image to .png re-encodes the pixels for a different balance of size, quality, and support. A .jxl file uses JPEG XL, the JPEG committee's designated successor to the original JPEG, engineered to cover lossy photography, lossless graphics, and animation in one codec. Uniquely, it can re-compress existing JPEG files about 20 percent smaller with bit-exact reversibility, making it attractive for archiving legacy photo libraries.
A .png file is a losslessly compressed raster image with full 8-bit alpha transparency, making it the standard choice for graphics that must stay pixel-perfect. Screenshots, logos, UI assets, and diagrams are the classic .png territory, since sharp edges and flat color survive without compression artifacts. For this route the practical draw is perfectly lossless, so files can be opened and re-saved indefinitely and true 8-bit (or 16-bit) alpha channel — balanced against photographic content produces files several times larger than JPEG or WebP, which is worth knowing before you commit a large batch.
The practical trigger for this conversion is usually a mismatch: with .jxl, chrome and Firefox do not ship it by default, which blocks mainstream web use. Switching to .png buys you perfectly lossless, so files can be opened and re-saved indefinitely, which is why it is the better fit for screenshots and screen recordings exported as stills. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
| Aspect | JPEG XL image (.jxl) | PNG image (.png) |
|---|---|---|
| Format type | Lossy — discards detail it judges invisible to shrink files | Lossless — every pixel or sample is preserved exactly |
| How it stores data | two coding paths: VarDCT for lossy photographic content and Modular mode for lossless or synthetic imagery | uses DEFLATE compression preceded by per-scanline prediction filters (None, Sub, Up, Average, Paeth) |
| Strongest at | archiving JPEG collections at reduced size with a guaranteed path back to the originals | screenshots and screen recordings exported as stills |
| Weak spot | chrome and Firefox do not ship it by default, which blocks mainstream web use | photographic content produces files several times larger than JPEG or WebP |
| Metadata | eXIF and XMP are embedded in dedicated container boxes and survive JPEG-to-JXL transcoding, including full restoration when reconstructing the original JPEG | text metadata lives in tEXt/iTXt chunks and XMP can be embedded there; standardized EXIF arrived late via the 2017 eXIf chunk, so many tools still drop EXIF when writing PNG |
Drop one or more .jxl files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
Select .png in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if PNG is selectable, the route is real and validated.
Press Convert. Decoding and re-encoding happen on your device using the browser's native image pipeline and hand-tuned encoders.
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid PNG file. Outputs keep the original filename with the .png extension.
No new loss is introduced — since jxl is lossy-oriented and png is lossless-oriented, everything the .jxl file still contains is carried over exactly. What was already discarded by the original lossy encode cannot be recovered, though; converting to .png does not "restore" quality.
Yes — the .jxl file is processed inside your browser tab and never uploaded. Decoding and re-encoding happen on your device using the browser's native image pipeline and hand-tuned encoders. Close the tab and the file is gone from memory.
Every modern browser has rendered PNG with full alpha since Internet Explorer 7 fixed its transparency bug in 2006, and native OS support is universal on Windows, macOS, Linux, iOS, and Android. It is also the required format in many contexts, such as iOS app icons and favicon fallbacks.
Larger, sometimes much larger. A lossless .png must store every pixel or sample the decoder produced, without the perceptual shortcuts .jxl used. Use this route for editing headroom, not for saving space.
In .jxl, eXIF and XMP are embedded in dedicated container boxes and survive JPEG-to-JXL transcoding, including full restoration when reconstructing the original JPEG. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.