Does this tool support regular expressions?

Yes. Enable the Regex toggle to use regular expressions. For example, use \d+ to match any number, or [aeiou] to match vowels. Standard JavaScript regex syntax is supported.

Can I replace text case-insensitively?

Yes. By default matching is case-insensitive. Toggle Case Sensitive on to match exact case. For example, with case-sensitive on, 'Hello' will not match 'hello'.

Is there a character or word limit?

There is no hard limit. The tool works entirely in your browser and can handle large texts. For extremely large documents (1M+ characters) performance may vary by device.

🔍 Text Tool

Find & Replace

Search and replace any word, phrase, or pattern in your text. Supports regex, case-sensitive and whole-word matching.

Find

Replace with

Case insensitive

Case sensitive

Whole word

Regex

Type something to find matches

Input text

Original 0 words · 0 chars

Preview

0Matches

0Replaced

0Words

0Chars

Changes diff

How to use the find and replace tool

Paste your text in the left panel, enter a search term and a replacement, then click Replace All. The right panel shows a live preview with all matches highlighted in orange before any replacement is made. Use Replace This to step through matches one by one.

Pattern	Matches	Example
\d+	Any sequence of digits	123, 4567
\w+	Any word (letters, digits, _)	hello, foo_bar
[aeiou]	Any vowel	a, e, i, o, u
\s+	One or more whitespace characters	spaces, tabs
^	Start of a line	^Hello matches line-start Hello
$	End of a line	world$ matches line-end world
(foo\|bar)	Either "foo" or "bar"	foo, bar
\b	Word boundary	\bcat\b matches "cat" not "catch"

🔍 Live preview

All matches are highlighted before replacing. Navigate with Prev/Next to step through matches one at a time — no accidental replacements.

🔤 Regex support

Enable Regex mode to use full JavaScript regular expression syntax. Capture groups, lookaheads, and backreferences all work as expected.

↩ Undo

Every Replace All action saves the previous text. Hit Undo to instantly revert the last replacement — no data is ever lost.

📋 Diff view

After replacing, a diff shows exactly what changed — deleted text in red, inserted text in green. Perfect for reviewing bulk edits.

Frequently asked questions

How do I use find and replace?

Paste your text, type what you want to find and what to replace it with, then click Replace All. The preview panel shows highlighted matches before anything changes. Use Replace This to replace one at a time.

How do I use regular expressions (regex)?

Enable the Regex toggle, then enter a JavaScript regex pattern in the Find field. For example, \d+ matches any number sequence. The Regex Reference table above lists the most common patterns.

How do I delete all occurrences of a word?

Type the word in Find, leave the Replace field empty, and click Replace All. All instances will be removed from the text.

What is whole word matching?

Whole word matching only replaces the term when it appears as a standalone word. For example searching "cat" with whole word on will not match "catch" or "concatenate" — only the word "cat" exactly.

Is my text saved anywhere?

No. All processing happens entirely in your browser. Your text is never sent to any server and is not stored anywhere. Closing the tab clears everything.