What is a .EXR file?
EXR (OpenEXR) is a high-dynamic-range image format used in film and visual effects. Created by Industrial Light & Magic.
- Did you know
- ILM created OpenEXR in 1999 and released it openly in 2003; it is now standard in VFX.
- OpenEXR stores pixels as 16-bit “half” floats - one sign, five exponent and ten mantissa bits - for high dynamic range.
- A single EXR can hold arbitrary extra channels such as depth, surface normals or motion vectors, and it is now an Academy Software Foundation project.
- 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
- .EXR 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 .EXR file
- Drag a .EXR 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.