Find and Replace

Find and Replace Text in Bulk

A find and replace tool lets you swap one string for another across an entire block of text in a single pass. Instead of editing occurrences by hand, you paste your content, describe what to match, and get clean output instantly. This tool supports both plain-text matching and full regular expressions, so you can handle everything from a simple word swap to capture-group rewrites. It is ideal for cleaning up logs, refactoring config snippets, normalizing exported data, or reformatting copy before you commit it.

How it works

Everything runs locally in your browser using JavaScript. Your text is processed on your own machine and never leaves the page, so there are no uploads and no round trips to a server. Toggle regex mode to use patterns like \d+ or backreferences such as $1, and enable case-insensitive matching when you need it. Results update as you work, so you can verify a replacement before copying it out. You can switch modes and re-run the replacement without reloading, which makes it easy to iterate on a tricky pattern until the output looks right, and there is no limit on how many replacements you run.

Practical use cases

• Rename a variable or key across a pasted code block or JSON payload
• Strip tracking parameters or fix inconsistent spacing in URLs
• Convert delimiters, for example turning commas into tabs
• Bulk-correct a repeated typo in documentation or CSV exports

If your text has duplicate rows to clear afterward, try Remove Duplicate Lines, sanity-check patterns with the Regex Tester, or reformat casing with the Case Converter.

Because all processing happens in-browser, nothing you paste is stored, logged, or transmitted. The tool is free, requires no account, and works in every modern browser, including mobile, so you can safely run it against sensitive text.