7 ms·
Right, if you look at PDF files from Internet Archive, they're usually compressed with MRC (Mixed Raster Content). IIRC each page has three layers: - backgrou
by rahimnathwani 8mo ago
Right, if you look at PDF files from Internet Archive, they're usually compressed with MRC (Mixed Raster Content).
IIRC each page has three layers:
- background (jpeg, color)
- foreground (jbig2, monochrome maybe?)
- mask (indicating whether foreground or background should be shown at this point)
https://github.com/internetarchive/archive-pdf-tools https://github.com/internetarchive/archive-pdf-tools