profanite-core

The Rust core of profanite — a lightweight, obfuscation-resistant profanity filter.

[dependencies]
profanite-core = "0.1"

use profanite_core::Profanite;

let p = Profanite::builder().build().unwrap();

p.contains_profanity("what the fuck");   // true
p.censor("what the fuck");               // "what the ****"
p.find("oh fuck that");                  // Vec<Match> with spans + category + severity

Features

• Obfuscation-resistant: bidi-strip, NFKC, casefold, homoglyph fold, conservative leet substitution, repeated-char collapse.
• Tiered wordlist: short ambiguous stems (e.g. ass) require word boundaries; unambiguous compounds (e.g. motherfucker) match anywhere, catching concat bypasses like Hemoglomotherfuckerbin.
• Allowlist escape hatch for the Scunthorpe problem.
• Bundled dictionaries from LDNOOBW (CC0) for English, Spanish, Hindi (romanized), French, German. Enable via cargo features:

profanite-core = { version = "0.1", features = ["all-langs"] }

What this is not

profanite is a keyword filter. It is not a hate-speech detector, not a slur dictionary (slurs are deliberately unbundled — supply your own), and not context-aware. See PHILOSOPHY.md in the main repo.

Benchmarks

Run cargo run -p profanite-bench -- fast in the workspace. Current numbers live in README.md.

Node.js and Python bindings

• Node: profanite on npm.
• Python: profanite on PyPI.

License: GPL-3.0-or-later.