JXL Studio: JPEG XL Converter

JXL Studio converts and views JPEG XL images entirely on your device — no uploads, no accounts, no servers. WHY JPEG XL JPEG XL is the next-generation image format: meaningfully smaller files at the same visual quality, lossless recompression of existing JPEGs, and support for HDR and wide color. JXL Studio gives you full control over it instead of one hidden preset. REAL ENCODER CONTROL • Lossy or lossless modes, with a quality slider for lossy • Effort — trade encode speed for smaller output • Modular mode and Progressive rendering • Lossless JPEG transcode — recompress existing JPEGs into JXL without losing quality • HDR / high bit depth — keeps 10/16-bit and Ultra HDR gain-map data • Strip GPS metadata before you share or store a file BATCH & BACKGROUND Convert many images at once. Conversions keep running in the background, so you can leave the app while they finish. VIEW JPEG XL FILES Browse and open .jxl files already on your device — JXL Studio doubles as a viewer, not just a converter. PRIVACY BY CONSTRUCTION Every conversion runs through a native codec built into the app itself. Your photos are never uploaded anywhere. See the privacy policy for exactly what each permission is used for. FREE + PRO The free tier is supported by an optional rewarded ad you can watch to lift the batch-size limit. Pro is a one-time purchase that removes ads and unlocks unlimited batch size plus every advanced encoder option. Available in 20 languages.