jbig2dec(1)

📦
version 0.20 · 2 versions
  • 0.20 · alpine 3.22, alpine 3.23, alpine 3.24, arch rolling, debian trixie, fedora 43, fedora 44, nixos 26.05, nixpkgs unstable, opensuse-leap 16.0, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking (latest)
  • 0.19 · debian bookworm, ubuntu jammy
, in alpine 3.22, alpine 3.23, alpine 3.24, arch rolling, debian trixie, fedora 43, fedora 44, nixos 26.05, nixpkgs unstable, opensuse-leap 16.0, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 jbig2dec(1) — the jbig2dec Manual, but make it cute 💖

okay bestie, pull up a chair, we're decoding JBIG2 files and we're gonna have a time ✨

🌸 NAME 🌸

jbig2dec — a file format converter that is specialized in JBIG2 decoding. like, that's her whole thing. that's her lane. she is not like other converters 💅

🎀 SYNOPSIS 🎀

jbig2dec [options] file.jbig2
jbig2dec [options] global-stream page-stream

🦋 DESCRIPTION 🦋

so the jbig2dec command converts JBIG2 files to png or pbm files. that's the vibe. that's the whole job. 👑

when you pass her a single file argument, she reads it as a JBIG2 file stream — and it can be organized either sequential or random-access. she's flexible like that, no cap.

when you pass her two stream arguments, they get interpreted as the global and page-specific portions of an embedded organization, exactly like the ones used in PDF. 📄✨ and listen — if a particular page doesn't reference any global segment stream, you can just pass /dev/null as the global-stream argument to request the embedded parser. iconic shortcut behavior, honestly.

✨ OPTIONS ✨

the options are as follows, and yes we're doing all of them, nobody gets left behind 🫶

  • -e, --embedded — expect an embedded bit stream without a file header. no header, just vibes.
  • -o file, --output file — store the decoded output in file. defaults to the input filename but with a different extension. set it to - for standard output. (yes, dash means stdout, classic.)
  • -t type, --format type — force a particular output file format. supported formats are png and pbm. pick your fighter 🥊
  • -d, --dump — print the structure of the JBIG2 file instead of actually decoding it. like reading the blueprint instead of building the house 🏗️
  • -m, --hash — print a hash of the decoded document. for the checksum girlies 🔥
  • -q, --quiet — suppress warnings and other diagnostic output. shhh 🤫
  • -v, --verbose — report additional information about the decoding process. pass just -v for info about the file as it's being decoded — that's the same as --verbose=2. pass --verbose=3 or higher for debugging information. she will tell you everything, and honestly? love that for her 💀
  • -V, --version — show program version information.
  • -h, --help — show usage summary. (hi bestie 👋)

😭 REPORTING BUGS 😭

found a bug? report it at https://bugs.ghostscript.com — they wanna know, fr fr.

you can also contact the developers on Discord: https://discord.gg/taPnFQp5gb or via the mailing list <gs-devel@ghostscript.com>. group chat energy, but make it upstream. 🫶

👑 AUTHOR 👑

this manpage was initially written by Sebastian Rasmussen <sebras@gmail.com> for jbig2dec and the Debian Project. absolute legend behavior, we stan 🌈

okay that's the whole page bestie, go decode something gorgeous 💅

and that's a wrap! this was Version 0.20, dated 2023 May 19, from the jbig2dec Manual — mwah, bye, ilysm, go convert some files 💖✨🎀

📦 where this page comes from