What is a .JP2 file?
JP2 is a JPEG 2000 image, offering better compression than ordinary JPEG.
- Did you know
- JPEG 2000 arrived in 2000 but never overtook plain JPEG outside niches like cinema and archiving.
- JP2 is the boxed file format of JPEG 2000, wrapping the wavelet codestream together with metadata such as colour and resolution.
- JPEG 2000 found a lasting home in digital cinema, where the DCI standard adopted it for distributing feature films.
- 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
- .JP2 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 .JP2 file
- Drag a .JP2 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.