Find & Replace
Search and replace text with simple or regex matching.
Informational only; verify critical results independently.
How to use
- Paste the full text you want to search within.
- Enter the literal string or enable regex for pattern matching.
- Enter the replacement text—use capture groups if your regex mode supports $1, $2.
- Toggle case sensitivity depending on whether FOOD should match food.
- Run replace-all or step through if the tool offers preview to avoid mistakes.
- Copy the output; keep an undo buffer elsewhere because bulk replace is destructive.
Examples
- Rename variable foo → bar in a pasted code block
- Regex: replace dates YYYY-MM-DD with DD/MM/YYYY
- Strip double spaces with replace ' ' → ' ' iteratively
- Change Windows CRLF to LF by replacing \r\n (regex mode)
- Redact emails in a log with a fixed placeholder
- Swap CSV delimiter from semicolon to comma cautiously
FAQ
- Regex dialect?
- We follow JavaScript-style regex when regex mode is on; anchors ^ $ work per line if multiline is enabled.
- Why did nothing match?
- Check case mode, whitespace, and escaping—dots and brackets are special in regex.
- Replace newlines?
- Use \n in regex mode carefully; mixed CRLF files may need \r?\n.
- Global vs first only?
- Default is usually replace all occurrences; confirm in the UI.
- Huge files?
- Browser memory limits apply; use sed/awk for multi-GB logs.
- Privacy?
- Text stays local to your browser.
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Last updated: 2025-09-15