Does regex use JavaScript syntax?

Yes. Standard RegExp patterns and flags supported in your browser.

Text Manipulator

Find and replace text or test regex patterns with live match highlights.

Theme

Private by design: This tool runs in your browser — your data is not uploaded.

Mode

Text

Find

Replace with

Use regex

Case sensitive

Output

Replace all occurrences of a word in a document, or test a regex pattern and see every match highlighted.

Does regex use JavaScript syntax?: Yes. Standard RegExp patterns and flags supported in your browser.
Is my text uploaded?: No. Processing runs locally.

Last updated: 2026-06-05