Find and Replace Text

Bulk-transform text using plain-text matching or full JavaScript regular expressions. Add multiple find/replace rule pairs that run in sequence. Toggle case-sensitive matching, whole-word matching, and regex mode. Works on anything from a single paragraph to an entire document or code file. All processing runs in your browser.

Common Use Cases

Rename variables across code — paste a code snippet, find "oldName", replace with "newName", preserving whole-word matching. Update URLs in bulk — migrate from http:// to https://, or swap a domain name across an entire sitemap. Clean up imported data — normalize phone formats, remove extra spaces, or strip unwanted characters using regex. Translate placeholder tokens — replace merge tags like {{name}} with actual values in email templates. Anonymize data — use regex to replace email addresses or phone numbers with placeholders before sharing logs.

Regex Quick Reference

. — any character · * — zero or more · + — one or more · ? — zero or one · \d — digit · \w — word character · \s — whitespace · ^ — start of line · $ — end of line · (group) — capture group · $1, $2 — reference captures in replacement

Where This Helps

Bulk-editing a CSV export where one column needs a sweep of vendor name corrections that's too tedious for the spreadsheet's find-and-replace UI. Reworking a long Markdown document where the same phrase needs to change everywhere, including inside code blocks where text editors that respect syntax scope won't touch it. Cleaning up an old codebase log of TODO comments that all reference a deprecated ticket-tracking system.

Multi-rule transformations: chaining several find-and-replace passes in a single operation, which a regular editor can's built-in panel typically forces you to apply one at a time. Stripping unwanted characters from clipboard content before pasting into a brittle downstream tool that won't accept them. Reversible "dry-run" previews of what a regex will actually change before committing, which the tool's diff view makes visible.

How This Compares

VS Code, Sublime Text, and Notepad++ all have powerful find-and-replace with regex support, and they're the right tool when you're already working in a file there. The friction shows up when the content lives in your clipboard or in a one-off chunk you just want to clean: opening an editor, pasting, transforming, copying back is a five-step round trip. sed, awk, and Python one-liners handle anything but require comfort with the shell.

This tool sits at the "paste, transform, copy" level — one screen, multi-rule support, regex with capture groups, and a diff preview that shows exactly what's about to change. Everything runs client-side, so the text never leaves your browser. For more structural transforms on JSON, XML, or code, see code beautifier or XML formatter.

Frequently Asked Questions

Built by Derek Giordano · Part of Ultimate Design Tools

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