JPEG XL promises to replace JPEG, PNG, and GIF in one format. Until the ecosystem catches up, convert JXL files to PNG when you need something every tool actually opens.
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Best-in-class compression; worst-in-class adoption
Drop .jxl files — lossy, lossless, or losslessly re-compressed from JPEG. Animated JXL exports the first frame.
The reference JXL decoder (libjxl) compiled to WebAssembly runs in your browser tab. Lossless JXL decodes perfectly; lossy JXL decodes to the encoded quality level.
PNG output is lossless from the decoded pixels. Dimensions, bit depth (8/10-bit), and ICC profiles preserved. Alpha channel preserved for JXL files with transparency.
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JXL offers better compression than AVIF and WebP, lossless JPEG re-compression, and HDR. It also has minimal toolchain support in 2025 after Chrome dropped it in 2022. PNG is the safe bridge.
reference decoder, no tools required
convert JXL libraries to PNG in one session
JXL status, lossless decode, and compatibility.
Chrome added JXL support in 2021 then removed it in Chrome 110 (2022) pending standardization. Firefox and Safari have partial support flags. Most desktop apps, CDNs, and CMS systems have no JXL codec installed. The format is technically superior but adoption is 2–3 years behind WebP.
Yes. Lossless JXL decodes to exactly the original pixel values. PNG re-encodes them losslessly. Round-trip: lossless JXL → PNG → lossless JXL would recover the identical image.
JXL can store a JPEG bit-stream losslessly (a "lossless JPEG re-compression"). Decoding such a JXL gives the exact JPEG pixel values. The PNG output matches what you'd get decoding the original JPEG.
JXL supports 32-bit float per channel. PNG supports 16-bit integer per channel. Our converter outputs 8-bit PNG by default (maximum compatibility) or 16-bit PNG for high-bit-depth JXL when you toggle the option.
The converter exports the first frame of animated JXL as a still PNG. JXL animation support in browsers and tools is nearly zero — for animated content keep the JXL master and wait for ecosystem support.
Not dead — actively developed and included in Firefox 116+ (behind flag), Safari 17+ (enabled), and many codec libraries. Chrome's reversal was a setback, not a death. The format remains technically strong; web adoption just lags expectations.
No. PNG is lossless — it captures exactly what the JXL decoder produces. The JXL's own compression loss is already baked in before PNG sees the pixels.
Yes. JXL supports sRGB, Display P3, Rec.2020, and custom ICC profiles. Those profiles carry over to the PNG's iCCP chunk. Wide-gamut JXL content preserves the extended color gamut in the PNG output.