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TinyCodec
A lossless codec in 45 lines of C code.
CLI
To use the CLI, use pack to encode an image and unpack to decode it into a PNG.
tcom pack image.png
tcom unpack image.tcom
The CLI in tcom_dependency.c supports PNG, BMP, PNM/PAM, QOI and WebP.
The codec itself is 45 lines. The CLI and format adapter is 164 lines, minus the image libraries.
Benchmark
3,167 images. Combined file sizes and encoding/decoding speeds:
| Codec | Total size (MB) | Encode (MP/s) | Decode (MP/s) |
|---|---|---|---|
| TCOM | 1,954.35 | 284.09 | 368.18 |
| QOI | 2,125.45 | 238.71 | 298.07 |
| libpng level 6 | 1,792.59 | 7.30 | 100.16 |
| Oxipng effort 4 | 1,621.25 | 1.14 | 113.90 |
MB is decimal and MP/s is million pixels per second.
This was done on a 9950x3d, measured in memory without file I/O and all decoded pixels matched as they should.
Copyright 2026 Ozzy M. Licensed under Apache 2.0.
Third-party code retains their own licenses of course.
Similar repos
Languages
C
96.7%
CMake
3.3%
See what people are saying
README
TinyCodec
A lossless codec in 45 lines of C code.
CLI
To use the CLI, use pack to encode an image and unpack to decode it into a PNG.
tcom pack image.png
tcom unpack image.tcom
The CLI in tcom_dependency.c supports PNG, BMP, PNM/PAM, QOI and WebP.
The codec itself is 45 lines. The CLI and format adapter is 164 lines, minus the image libraries.
Benchmark
3,167 images. Combined file sizes and encoding/decoding speeds:
| Codec | Total size (MB) | Encode (MP/s) | Decode (MP/s) |
|---|---|---|---|
| TCOM | 1,954.35 | 284.09 | 368.18 |
| QOI | 2,125.45 | 238.71 | 298.07 |
| libpng level 6 | 1,792.59 | 7.30 | 100.16 |
| Oxipng effort 4 | 1,621.25 | 1.14 | 113.90 |
MB is decimal and MP/s is million pixels per second.
This was done on a 9950x3d, measured in memory without file I/O and all decoded pixels matched as they should.
Copyright 2026 Ozzy M. Licensed under Apache 2.0.
Third-party code retains their own licenses of course.
Similar repos
Languages
C
96.7%
CMake
3.3%