Free Find and Replace Tool
Updated September 2026
Find and replace text with regex or plain text matching, with a case-sensitive toggle — free online find-and-replace tool.
Verified Capabilities
Toggle case sensitivity and full JavaScript regex support, including capture groups like $1/$2.
Shows exactly how many replacements were made after each Replace All.
All matching and replacing happens in your browser — no text is uploaded anywhere.
No whole-word-only toggle (use regex \b...\b instead), no step-through/Replace Next mode, and no undo — only Replace All, applied to every match at once.
Writing, development, and content work all involve repetitive text tasks. The Find and Replace automates this instantly so you can focus on what actually matters.
Find and replace text with regex or plain text matching, with a case-sensitive toggle — free online find-and-replace tool. Results are immediate — no waiting, no loading screens, no account required.
Who uses the Find and Replace?
- Writers doing global find-and-replace edits on long documents before publishing.
- Developers cleaning up data files with consistent text substitution patterns.
- Students correcting consistently misspelled words throughout a lengthy essay.
Common uses and search terms
The Find and Replace is frequently used for: find replace, text replace, regex replace. Whether you need a quick result or are working through a longer project, the tool handles all common variations without any configuration.
Why use Allio Tools's Find and Replace?
Everything runs locally in your browser. No data is sent to a server, logged, or stored anywhere. The tool is completely free with no usage limits, no premium tiers, and no account required. Available in 11 languages and optimised for all screen sizes, the Find and Replace works on desktop, tablet, and mobile with no app download needed.
See also:Word Unscrambler · Word Counter · Synonym Finder
How the Find and Replace works
Paste your text into the large text area at the top.
Enter the search term in the Find field and the replacement in the Replace field.
Toggle Case-sensitive and/or Regex mode as needed.
Click Replace All to apply. The match count is shown below the result.
Tips & tricks
- There's no "whole word only" checkbox — for that behavior, switch on Regex mode and wrap your search term in \b...\b (e.g. \bcat\b).
- There's no Replace Next / step-through mode and no undo — Replace All applies to every match at once, and there's no way to reverse it after the fact except retyping your original text.
- Your original input textarea is untouched — the result appears in a separate output box below, so you can still see and re-copy your original text if the replacement wasn't what you wanted.
Frequently Asked Questions
Can I use regular expressions for advanced find and replace?
Yes. Enable Regex mode and use standard JavaScript regex syntax. For example, find \d+ to match any number sequence, or use capture groups: find (\w+) (\w+) and replace with $2 $1 to swap two words.
Is there a "whole word only" option?
No — there's no dedicated whole-word toggle. To match whole words only, use Regex mode with word boundaries: find \bcat\b to match "cat" but not "concatenate" or "scatter".
Can I step through matches one at a time instead of replacing all at once?
No — there's only Replace All. There's no "Replace Next" or step-through mode; every match is replaced in a single click.
Can I replace text with nothing to delete occurrences?
Yes. Leave the Replace field empty and click Replace All to delete all instances of the search term.
Can I undo a replacement?
No — there's no undo button and no history. If you need the original back, keep a copy of your input text before clicking Replace All, since the result overwrites the output area but not your original input field.
Is there a limit on text length?
The tool handles texts up to several hundred thousand characters comfortably. For very large files (10+ MB), performance may slow — consider a code editor like VS Code for bulk replacements in large files.
Is my data safe when using the Find and Replace?
Completely safe. The Find and Replace processes everything locally in your browser. No input data, results, or usage information is ever transmitted to or stored on any server.
Is there a character or word limit for the Find and Replace?
The Find and Replace has no hard character limit — it processes text as large as your browser can handle, typically hundreds of thousands of characters. Very large inputs may be slower depending on your device.
Can the Find and Replace process text in other languages?
Yes. The Find and Replace handles all Unicode text correctly, including accented characters, CJK characters, Arabic, Cyrillic, and emoji. It works with any language that your browser renders, with no additional setup or language packs required.
Works with ChatGPT, Claude, Cursor, GitHub Copilot, VS Code, Poe and more — 106+ tools, zero data collection.