Regex Editor

Regex Editor is a fast, distraction-free playground for building, testing, and debugging regular expressions — right on your device.

Type a pattern, paste your text, and see every match highlighted instantly. No more guessing whether your expression works: edit it and watch the results update in real time.

KEY FEATURES

• Live match highlighting — results update as you type

• Capture groups — inspect numbered and named groups in real time

• Replace & preview — test substitutions before you commit them

• Pattern library — save your own expressions and reuse them anytime

• Built-in cheat sheet — tokens, anchors, quantifiers, and lookarounds at a glance

• Ready-made presets — email, URL, phone number, dates, IP, hex colors, and more

• Flags support — global, case-insensitive, multiline, dotall, and others

• Match details — positions, lengths, and the full match list

• Clean monospace editor with a comfortable dark theme

• Works offline — no account, no sign-up, no tracking

PERFECT FOR

• Developers validating input and parsing text

• Data wranglers cleaning up messy strings

• Students learning how regular expressions work

• QA engineers and sysadmins searching through logs

• Anyone who writes regex and wants to get it right the first time

WHY REGEX EDITOR

Regular expressions are powerful but easy to get wrong. Regex Editor turns trial-and-error into instant feedback, so you can craft the exact pattern you need in seconds — then copy it straight into your code.

Lightweight, private, and built for focus. Download Regex Editor and make regular expressions simple.