Regex Replace

Find and replace text using regular expressions with live preview and capture group support. Runs in your browser — nothing is sent to a server.

Pattern

Flags: g global i ignore case m multiline

Replacement

Use $1, $2… to reference capture groups. Use $& for the full match.

Input Text

Matches in Input

Result

How to Use Regex Replace

Enter a pattern to search for — use capture groups () to save parts of each match.
In the replacement, use $1, $2 to reference captured groups.
Enable the g (global) flag to replace all occurrences, not just the first.
Results update automatically as you type.

Specifications

Accepts: Text — type or paste
Gives you: copy to clipboard
Where it runs: Your browser — the file is never uploaded
Sign-up: None
Cost: Free, with no usage limits