What is a .JPX file?
JPX is the extended JPEG 2000 format, adding features over basic JP2.
- Did you know
- JPX extends JPEG 2000 with multiple layers and richer colour.
- JPX is defined by JPEG 2000 Part 2, the extensions standard ISO/IEC 15444-2, built on top of the Part 1 core.
- A JPX file is built from nested tagged “boxes”, the same container approach used by QuickTime and MP4.
- What Analyser reads
- Decode and preview extra still-image formats in pure JavaScript - Truevision TGA, QOI, Netpbm (PPM/PGM/PBM), PCX, farbfeld, WBMP, XBM/XPM, Sun Raster and SGI are fully rendered - and read header metadata from codec-heavy formats: Radiance HDR, DirectDraw Surface (DDS) game textures, OpenEXR, JPEG 2000, JPEG XR, EPS/PostScript, Windows WMF/EMF metafiles, Apple ICNS icons, CUR/ANI cursors, MNG and Lottie animations.
- Depth of analysis
- .JPX is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .JPX file
- Drag a .JPX file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.