AnyTool
Your files never leave your device. All processing happens locally in your browser.

Where can I find ready-to-use regex patterns?

AnyTool offers a searchable library of vetted, copy-ready regex patterns — email, URL, phone, IP, date, UUID, password, and more — each with a plain-English explanation and a live tester that highlights matches and capture groups. Patterns run on the native browser RegExp engine, so nothing is ever sent to a server.

  • Curated, JS-valid patterns by category with fuzzy search
  • One-click copy of the pattern and flags
  • Live test panel highlights matches and capture groups as you type
  • Plain-English explanation plus working match / non-match examples
  • 100% in-browser via native RegExp — fully private

What is

Regular Expression (Regex)

A regular expression is a pattern that describes a set of strings, used to search, validate, and extract text. A regex library provides pre-built, tested patterns for common tasks like validating emails or matching IP addresses.

Developer Tools

Related terms

RegExpPattern MatchingValidationCapture GroupsFlags

Frequently Asked Questions

No — matching runs locally with the native browser RegExp engine.

Your test text never leaves the browser. Matching uses native new RegExp inside a guarded loop, so you can safely test real or sensitive data — directly avoiding the server round-trips that some online regex testers perform on every keystroke.

Yes — every pattern is hand-vetted, JS-valid, and ships with pass/fail examples.

Unlike community-dump libraries with noisy, unrated submissions, every pattern here is curated and verified to be JS-valid with working match and non-match examples, so the pattern you copy actually works where you paste it.

Yes — flip g/i/m/s/u flags and edit patterns with live valid/error feedback.

You can toggle flags and re-run matches instantly, and editing or writing your own pattern shows a live green "valid" or red "syntax error" badge, compiled safely in a try/catch.

Detailed Explanation

How It Works

What the Regex Pattern Library Provides

AnyTool offers a searchable, categorized catalogue of hand-vetted, JS-valid regex patterns (email, URL, phone, IP, date/time, password, UUID, and more), each with a plain-English explanation and working match / non-match examples. A live test panel runs the selected pattern against your text using the native browser RegExp engine, highlighting matches and capture groups as you type, with a flags toggle (g/i/m/s/u).

  • Curated, vetted, copy-ready patterns by category with fuzzy search
  • Plain-English explanation + pass/fail examples per pattern
  • Live match and capture-group highlighting via native RegExp
  • Flags toggle and a valid/error badge for custom patterns
  • Bundled catalogue — works offline, nothing uploaded
Privacy & Security

Privacy vs Server-Evaluated Testers

regex101 is reported to evaluate keystrokes against a backend and store shared patterns server-side. AnyTool runs all matching locally with native RegExp inside a guarded loop, so you can test real or sensitive data without it ever leaving the browser — and the curated patterns are bundled, so the tool works offline.

Regex Library: AnyTool vs typical tools
CapabilityAnyToolTypical tools
MatchingIn your browserSometimes server-side
Catalogue qualityVetted, JS-validOften community dump
Explanation + examplesYesVaries
Live highlight + groupsYesVaries
Works offlineYesNo

Capabilities reflect the live AnyTool tool; competitor behavior varies by service.