Regex left off
Patterns like \s+ or \d+ are treated as plain text unless Regex is enabled.
Fix: Turn on the Regex switch when you want pattern matching.
Find and Replace
Find and replace text patterns
Find:
Replace with:
Input
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Output
Output will appear here...
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What is Find and Replace
Written by Giorgos Kostas. Last reviewed:
Find and Replace is an online text replacement tool for changing or removing repeated text in a browser. By default it searches for literal text, so characters like underscores, commas, spaces, or words are matched exactly as typed.
For pattern-based cleanup, turn on Regex mode and use a JavaScript regular expression. Regex mode replaces all matches globally, which is useful for removing repeated whitespace, stripping numbers, or normalizing multiple separators at once.
Why use it
- Remove characters such as underscores, commas, tabs, or extra separators.
- Replace repeated words or phrases across a block of text.
- Use regex patterns for whitespace, digits, and other text cleanup jobs.
- Preview the changed output before copying it elsewhere.
- Run replacements locally without sending pasted text to a server.
Features
- Literal text replacement by default
- Optional JavaScript regex mode
- Empty replacement removes matches
- Global replacement across the full input
- Client-side Find and Replace workflow, no servers involved
How to use Find and Replace
- Paste text. Add the text you want to change in the input editor.
- Enter find and replacement values. Type the exact text to find, then type replacement text or leave it empty to remove matches.
- Use Regex when needed. Turn on Regex only when the Find value should be treated as a JavaScript regular expression.
- Replace and copy. Review the output and copy the cleaned text.
Example (before/after)
Find and Replace examples
Example 1 - remove underscores Input: This_is_a_test Find: _ Replace with: (empty) Example 2 - normalize whitespace with Regex on Input: alpha beta gamma Find: \s+ Replace with: space
Result
Example 1 output: Thisisatest Example 2 output: alpha beta gamma
Common errors
Replacement left empty
An empty replacement removes every match.
Fix: Type replacement text if you want to substitute instead of delete.
FAQ
How do I remove underscores from text?
Paste your text, type _ in the Find field, leave Replace with empty, and run Replace. For This_is_a_test, the output is Thisisatest.
Does Find and Replace support regex?
Yes. Turn on Regex mode to use JavaScript regular expressions. The tool applies the pattern globally, so every match is replaced.
What happens if Replace with is empty?
Every match is removed. This is useful for deleting underscores, commas, spaces, digits, or any regex pattern you match.
Is regex enabled by default?
No. The default mode is literal text replacement so special characters are safe unless you intentionally turn on Regex.
Is my text sent anywhere?
No. Find and Replace runs in your browser and keeps pasted text local.
Related tools
Pair Find and Replace with whitespace, punctuation, line, and case tools for text cleanup workflows. You can also browse the full String Utilities category for more options.
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