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Find and Replace

Runs in browser

Find and replace text online with regex support, case sensitivity, and replace-all options.

Last updated 08 Apr 2026

Paste text, enter a search string and replacement, and replace all occurrences or just the first. Supports regular expressions and case-sensitive matching. Shows how many replacements were made. Runs entirely in your browser — nothing is uploaded.

Result
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How to use

  1. 1

    Enter find and replace values

    Type the text to find and the text to replace it with. Leave the replacement empty to delete matches.

  2. 2

    Configure options

    Toggle 'Replace all occurrences', 'Case-sensitive', and 'Regular expression' as needed.

  3. 3

    Paste your text

    Paste or type the text to process in the input box. Replacements are made instantly.

  4. 4

    Copy the result

    The output shows how many replacements were made. Click Copy to send the result to your clipboard.

Frequently asked questions

How do I delete all occurrences of a word?
Enter the word in the Find field, leave the Replace field empty, and enable 'Replace all occurrences'. All matches will be replaced with nothing (deleted).
How do I use regular expressions?
Enable 'Regular expression' mode and enter a JavaScript regex pattern in the Find field. For example, '\d+' matches any number, '\s+' matches whitespace, and '(\w+)\s(\w+)' captures two words. Use $1, $2 etc. in the replacement to reference capture groups.
Can I replace with nothing (delete matches)?
Yes. Leave the Replace field completely empty and all matches will be deleted from the text.
Is the replacement case-sensitive?
By default, no — 'hello' matches 'Hello', 'HELLO', and 'hElLo'. Enable 'Case-sensitive' to match exact capitalisation only.
How many replacements can it handle?
There is no hard limit. The tool handles large documents with thousands of replacements instantly. Very large inputs (millions of characters) may cause a brief processing delay.
Is my text uploaded or stored?
No. All find and replace processing happens in your browser. Your text never leaves your device.

The Kordu Find and Replace tool performs text substitution directly in the

browser. Paste any text, enter what to find and what to replace it with, and

get the result instantly. Toggle "Replace all occurrences" to replace every

match, or leave it off to replace only the first. Case-sensitive mode makes

the match exact; off by default to catch all capitalisation variants.

Enable "Regular expression" mode to use full JavaScript regex syntax in the

find field — capture groups, lookaheads, character classes, and quantifiers

all work. Regex syntax errors are shown inline so you can debug patterns.

Common uses: cleaning up copy-pasted text, normalising inconsistent formatting,

bulk replacing terminology in documents, removing or transforming patterns in

data exports, and testing regular expressions against real content.

All processing runs client-side in your browser. Your text is never uploaded,

stored, or transmitted to any server.

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