Project goal
The goal is to make email and phone-number masking consistent and portable across languages before data leaves your system through logs, exports, or shared text.
mask-pii
Supported language implementations
mask-pii provides implementations for many programming languages. Choose a language below to open its guide page.
Common behavior across implementations
- Email masking keeps the domain and masks the local part.
- Phone masking keeps formatting as much as possible while masking middle digits.
- Masking rules are enabled explicitly, and the mask character can be customized.
Language guides
Each language page introduces setup, usage notes, and the language-specific README.
AWK
Open guide
Bash
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Bun
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Carbon
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Common Lisp
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Crystal
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D
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Deno
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Elixir
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Fish
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Go
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Groovy
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Hare
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Haskell
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JavaScript
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Julia
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Lua
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Nim
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Nushell
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OCaml
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Odin
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Perl
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PHP
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Pony
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PowerShell
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Python
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R
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Racket
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Red
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Ruby
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Rust
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Swift
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Tcl
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V
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Zig
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Zsh
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