FASTBASE64.COREUTILS(1)

💖 fastbase64.coreutils(1) 💖

okay so this is the fastbase64.coreutils page from the User Commands manual — yes bestie, we're in section 1, the land of user commands, and this one is so good. sit down, grab a strawberry 🍓, let's go.

---

✨ NAME ✨

fastbase64.coreutils — base64 encode/decode data and print to standard output, and it's coreutils compatible 🫶 (like, it plays nice with the classics, no cap).

---

🌸 SYNOPSIS 🌸

fastbase64.coreutils [OPTIONS...] [INPUTFILE]

that's it. options, then an input file. iconic, minimal, we love her 👑

---

🦋 DESCRIPTION 🦋

so fastbase64.coreutils encodes or decodes base64 data using the high-performance simdutf library 🔥 — and yes, the options are compatible with GNU coreutils base64, plus some clearly marked fastbase64-specific extensions. by default, it encodes binary input to base64 output. and on large files? it can be several times faster than standard base64 tools. literally main character energy 💅.

fastbase64 extension (not present in GNU coreutils base64): if you pass a second filename, that gets used as the output file 🎀. otherwise, output goes to standard output. and heads up — the -o option takes precedence over the positional output file. iykyk.

---

💅 OPTIONS 💅

• -b, --break=NUM — synonym for --wrap. (not in GNU coreutils base64, it's a fastbase64 thing ✨)
• -w, --wrap=NUM — wrap encoded lines after NUM characters (default 76). use 0 to disable line wrapping — zero means no wrapping, periodt 🎀.
• -d, -D, --decode — decode input 🔓.
• -e, --encode — encode input (this is the default) 🔒.
• --ignore-garbage — when decoding, ignore non-alphabet characters 🙈.
• -i, -n, --noerrcheck — fastbase64 extension (not present in GNU coreutils base64): when decoding, ignore non-alphabet characters (same as --ignore-garbage). yep, it's a twin 💀.
• -h, --help — display help message and exit 🫶.
• -o, --output=FILE — fastbase64 extension (not present in GNU coreutils base64): output file (default: "-" for stdout). remember, this beats the positional output file 💖.
• --version — output version information and exit 🌈.

---

🧚 EXAMPLES 🧚

Encode a file:

fastbase64.coreutils myfile.txt

Decode base64 data ignoring garbage:

fastbase64.coreutils -d -i < encoded.txt

see? easy. go slay 💅✨

---

🔥 SEE ALSO 🔥

base64(1), fastbase64(1) — go read those too bestie, they're right there 🌸

---

👑 AUTHOR 👑

Written by the simdutf development team 🫶 — absolute icons, honestly.

---

and that's the whole page!! no notes, ate and left zero crumbs 💖

---

okay bye bestie, mwah 💋 — this was simdutf, March 2026, from the FASTBASE64.COREUTILS(1) page, and yes the version and date are right there in the sign-off because i promised 🎀✨