Find & Replace
Find and replace text with regex support and case-sensitive options.
How to Use the Find & Replace Tool
Paste or type your text into the input box, enter the text you want to find, type the replacement, and click Replace All. The result appears below with a count of how many matches were replaced.
Options
- Case-sensitive — when enabled, "Hello" and "hello" are treated as different strings. Disable to match regardless of case.
- Regex mode — enables regular expression patterns in the Find field. Use capture groups and backreferences for advanced replacements.
- Whole word — only matches the find string when it appears as a complete word, not as part of a larger word.
Common Use Cases
Fix typos across a document, rename variables in code snippets, clean up CSV data, batch-edit configuration files, or reformat text patterns with regex. The tool runs entirely in your browser — nothing is uploaded.
Frequently Asked Questions
Can I use regular expressions?
Yes. Enable the "Regex mode" checkbox and enter any valid JavaScript regular expression in the Find field. You can use capture groups like (\w+) and reference them in the Replace field with $1, $2, etc.
What does the Whole Word option do?
It adds word boundary markers so the search only matches complete words. For example, searching for "cat" with Whole Word enabled will not match "category" or "concatenate".
Is my text stored or uploaded?
No. All processing happens locally in your browser. Your text never leaves your device.
Can I replace with an empty string to delete matches?
Yes. Leave the Replace field empty and click Replace All to remove all occurrences of the search term.
What happens if the regex pattern is invalid?
If the regex pattern cannot be parsed, the tool returns the original text unchanged and shows zero matches. Fix the pattern and try again.
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