mathiasbynens / 2im Goto Github PK

2im (twim) is an image format designed for extremely-low BPP (bits-per-pixels) range. Name of format hints that a single Twitter message (140 CJK characters, worth at least 287 bytes of payload) is enough to transfer an image.

Unlike SQIP (primitive), output is not directly understood by browser. A tiny (1089 bytes, if compressed) JavaScript decoder is used to rasterize input to ImageData.

See also: interactive demo page and twim vs SQIP comparison.

• add build / use manual
• better CLI (set number of therads, "fast" encoding mode)
• publish decoder as NPM module
• publish encoder module
• synchronize Java and C++ implementations