Find & Replace with Regex

Text

Quick Summary

Run powerful find-and-replace over a whole block of text — literal or full regex with flags, capture-group references, a live highlighted preview, and a match count.

Interactive Client Prototype Sandbox

Find

Replace ($1, $2 for groups)

2 matches

Source text

Preview (matches highlighted)

The quick brown fox jumps over the lazy dog.
The dog was not amused.
The End.

How to use the Find & Replace with Regex

Step-by-Step Guide

Enter your find pattern and replacement, toggle Regex and flags as needed, and watch the preview highlight matches. Click Apply to rewrite the text or Copy Result to grab it.

ExampleFind '(\w+)og' → replace '[$1OG]' ➔ 'dog' becomes '[dOG]' across the whole text.

Who it's for

Writers, developers, data cleaners, and anyone reformatting large blocks of text.

Core Features

Literal or regular-expression matching with g / i / m / s flags.
Capture-group references ($1, $2) in the replacement string.
Live highlighted preview of every match and a running match count.
Apply to rewrite the text, or copy the result; invalid patterns show an inline error.

🛡️ No tracking — your inputs, keys, and details never leave this client sandbox.