File Formats(3)
What is actually inside the files we push through tools: object models, encodings, and error correction.
- JPEG XL in Chrome 155, Measured: 21% Off Existing JPEGs With a Byte-Exact Way BackChrome 155 decodes JPEG XL, and the announcement says 30-50% better compression than JPEG. We ran the reference encoders: at matched quality JPEG XL came in 22 to 23 percent under JPEG, level with AVIF. The stronger result is lossless recompression: 30 real JPEGs shrank 20.8 percent and all 30 reconstructed byte for byte.11 min read
- What PDF Tools Actually Do: The Object Model, Stream Codecs, and Font EmbeddingCompress, merge, split, linearize and OCR are five different operations on the same file format. What each one touches in the object graph, why some are fast and some are not, and the three that can quietly corrupt a document.7 min read
- QR Codes 101: How They Actually WorkA walkthrough of QR internals against the spec: the module grid and its reserved regions, encoding modes, Reed-Solomon over GF(256), interleaved blocks, mask selection, and what the standard deliberately does not protect.9 min read