This repository was archived by the owner on Jul 10, 2026. It is now read-only.
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This project is just a fancy image format that absolutely seems to have no use... (for now).
Note: This, for now, doesn't have a GUI. You could use the web port by US FUCK DDWMV (contributor), but yo fuck off dude ddwmv you dog.
How does this thing work? It uses actual math instead of just guessing pixels:
- Haar Wavelet Engine: Multi-level frequency decomposition. It prioritizes image structure over noise. When you compress it too much, it fails with painterly blurs instead of those disgusting square JPEG blocks.
- Reversible YCoCg-R: A high-efficiency color transform that provides better decorrelation and color accuracy than standard YCbCr.
- Variable Bit-Depth: Fully supports 8-bit, 10-bit, and 16-bit precision pipelines. Perfect for HDR10 and professional photography.
- LZMA Entropy Coding: Deep dictionary-based compression for maximum data density.
- Progressive Loading: Chunked Bitstream structure allows for the low-resolution image to improve gradually as the file loads (just like AVIF)
- Kind of resistant to bitrot: XOR parity blocks can repair the file if your hard drive starts dying.
- "True" ROI Decoding: Extract specific 512px regions from giant images without decoding the whole file.
- Chrono-Layers: Store your entire undo history in one file. Scrub through your mistakes. (this feature technically works but not tested in real life scenario)
- Watermarking: Hide invisible text secrets directly within the wavelet coefficients.
-
wimf Python Library: API with
WIMFDecoderandWIMFEncoderclasses for app integration. -
CLI Converter (
wimf-convert): Batch conversion and format migration (supports PNG, JPEG, GIF). -
Terminal Viewer (
wimf-cat): Native 24-bit terminal viewer so you can actually see the image in your CLI. -
Metadata Editor (
wimf-meta): Edit file headers instantly without touching pixel data.