Gigapixel Range Explorer
Stream multi-gigapixel ESO & NASA archives (starting with the 3.3 GP Eagle & Omega Nebulae) over HTTP byte ranges using 1–16 WebAssembly SIMD workers and level-lock pixel inspection.
IMI (.imi) & IMIJ-Set (.imijset) · Multi-Core SIMD, Intermediate & Scientific Imagery
Built for peak multi-threaded decode throughput,
scientific rasters, and instant HTTP random access.
IMI is an experimental image format and archive ecosystem designed for workflows where decode speed, 4–16 thread scaling, rich sample types (baseline u8, u16, f16, f32; signed i8, i16 via signed_samples; extended u32, i32; wide u64, i64, f64 via wide_samples), extended channel layouts (Gray, GrayAlpha, RGB, RGBA, CMYK, Oklab, OklabAlpha via pixel_models), and 2-RTT HTTP byte-range region access matter more than squeezing the last 15% of web-delivery file size.
Decode & Compression Benchmarks
Filter by image class (photos, screenshots, pixel art, 32 scientific arrays, 4K/8K browser WASM), compare IMI decoder-speed modes (Quick, Fastest SplitHuf, RunLevel, 16-lane lossless), and run live browser trials.
3D Codestream Atlas
Watch IMI codestreams decode in 3D layer-by-layer (DC base slabs, transform/palette maps, Smart-Bits MSB/LSB byte planes, and rANS streams) across 13 distinct images, or encode your own PNG.
Visual Format Specification
Interactive bit-and-byte register diagrams for the 64-byte file header, 40-byte IHDR, record tags, 16-lane rANS streams, unit_ordinals, and imij-set Morton catalogs—verified at test time by spec_proof.rs.
Where IMI Fits (and Where It Doesn't)
Final Web Publishing & Minimum Bandwidth
JPEG XL and AVIF achieve ~10–25% smaller files than IMI at matched perceptual quality and on lossless photos. When network transfer size for end-user web delivery is the primary bottleneck, JPEG XL, AVIF, and zenjpeg are the right tools.
Intermediate Pipelines, Science & Interactive ROI
IMI is built for internal processing pipelines, scientific/detector arrays (photon counts, DEMs, CCD frames), multi-gigapixel tile servers, and browser WASM applications that need 1.1–3.2 GS/s 8-thread native decode (or 339–390 MP/s in 16-worker browser WASM) with 2-RTT HTTP random access.
Drop-In Browser Library & Web Components
<!-- 1. Decode and display any .imi file like a regular <img> -->
<script type="module" src="/src/imi-image.js"></script>
<imi-img src="/path/to/image.imi" alt="Sample IMI image" fit="contain"></imi-img>
<!-- 2. Configurable interactive pan/zoom Web Component -->
<script type="module" src="/src/imi-viewer.js"></script>
<imi-viewer src="/image/image.json" scene="eso1719" quality="webmap" memory-mode="auto"></imi-viewer>