Find and Replace Tool
Online Find and Replace Text Tool - Free and Secure
Need to find and replace text quickly without opening a heavy editor? Our online Find and Replace tool processes everything directly in your browser — nothing is ever sent to a server. Type your text, enter what to find and what to replace it with, and watch the result update live alongside a real-time match counter. It supports regular expressions with capture groups, Unicode-aware whole-word matching (perfect for Vietnamese), case-sensitive search, replace-all or first-only, and visual highlighting of every change.
How to Use
Paste or type your content into the Input box, or click Paste to pull it straight from your clipboard. Live statistics show character, word, and line counts.
Type the text you want to find and what to replace it with. A live badge instantly shows how many matches were found — before you change anything.
Toggle Match case, Whole word, Replace all, or Use regex. Keep Auto replace on to see results update as you type, or turn it off and run it manually with Ctrl/Cmd+Enter.
Every replacement is highlighted in green so you can see exactly what changed. Copy it, download as a .txt file, or send the result back to the input to chain multiple replacements.
Key Features
With Auto replace on, the output updates instantly as you type. Turn it off to review changes first and apply them manually with Ctrl/Cmd+Enter.
A badge next to the Find field shows the exact number of matches the moment you type, so you know the impact before you replace anything.
Switch on regular expression mode to match complex patterns and reuse captured groups ($1, $2, $&) in the replacement. Invalid patterns are flagged inline.
Unicode-aware whole-word matching avoids partial hits, while case-sensitive search gives precise control. Both work flawlessly with Vietnamese accents.
Replace every occurrence at once, or only the first match when you need a surgical, one-off edit.
Each inserted replacement is highlighted in green in the output, so what changed is never a guess.
Swap the Find and Replace fields in one click, or push the result back into the input to run several replacements in sequence.
All processing happens locally in your browser. Your text never leaves your device — ideal for sensitive documents and source code.
Popular Use Cases
Bulk-replace names, terms, or dates across long documents, contracts, and reports in seconds.
Rename variables, fix typos, or update file paths in source code — with regex for advanced refactors.
Standardize delimiters, fix formatting, or normalize values across CSV, JSON, and log files.
Update URLs, swap domains, or correct contact details across HTML and Markdown content.
Replace technical terms, product names, or placeholders consistently across translated text.
Enforce consistent terminology and style in articles, essays, and manuscripts.
Frequently Asked Questions
Is my text uploaded to a server?
No. The tool runs entirely in your browser — your text never leaves your device, which makes it safe for confidential documents and proprietary code.
How does regex mode work?
Enable 'Use regular expression' and the Find field is treated as a JavaScript regex. You can reference captured groups in the replacement with $1, $2, … as well as $& for the whole match. An inline warning appears if the pattern is invalid.
What's the difference between Match case and Whole word?
Match case makes the search case-sensitive ('Cat' won't match 'cat'). Whole word only matches complete words, so finding 'cat' won't touch 'category'. Whole-word matching is Unicode-aware and works correctly with Vietnamese.
Can I replace only the first occurrence?
Yes. Turn off 'Replace all occurrences' and only the first match is replaced — the live counter still shows the total number found.
Does it support Vietnamese and other Unicode text?
Fully. Searching, whole-word matching, and replacing all handle accented Vietnamese characters and other Unicode scripts accurately.
How do I run several replacements in a row?
After replacing, click 'Use as input' to move the result into the Input box, then enter your next find/replace pair. Repeat as many times as you need.
Our online Find and Replace tool pairs powerful features — real-time replacement, a live match counter, regex with capture groups, Unicode whole-word matching, and visual highlighting — with a clean, fast interface. It's completely free, 100% private, and runs entirely in your browser.