Find and replace is one of those deceptively simple tools that power-editors, developers, content managers, and data-cleaners use every day. But when you need to handle hundreds or thousands of replacements across large text blocks — dashboards, logs, CSV exports, or long articles — small mistakes can be costly. This Find & Replace (Bulk) tool gives you a careful, flexible environment to locate matches using literal search or regular expressions, preview all matches with highlights, replace one at a time to confirm, replace all occurrences when ready, and undo if something goes wrong. Everything runs directly in your browser, so your text never leaves your device.
Built-in editors (Word, Notepad++, VS Code) already provide find & replace capabilities. But a focused web tool helps when you want a no-install, privacy-first interface that works on any device and handles mixed content (HTML, CSV, code snippets) without changing file encoding or metadata. You can paste content from different sources, test complex regular expressions safely, and export the final text without touching server-side systems. This is especially useful if you're not working inside a code editor or if you need to share instructions with non-technical teammates.
The tool supports two primary modes:
This tool’s Preview Matches feature highlights each match in the full text, giving you a visual confirmation of what will change. Previewing reduces accidental replacements — for example, you might intend to replace a function name but inadvertently match parts of other identifiers. Preview shows exact matches and their positions so you can iterate safely.
Replace Next (Replace One) lets you walk through matches one by one, replacing each only after your confirmation. This is perfect for situations where context matters — for example, changing “lead” to “lead.” (noun vs verb) or editing transcriptions where some matches should remain. Replace All is great for mechanical edits you’ve fully verified. If something goes wrong, Undo restores the previous state for a quick rollback.
1. Clean CSV exports: Replace odd separators or remove stray control characters across many rows.
2. Update product codes or SKUs: Rename prefixes or change formatting for thousands of lines quickly with regex groups.
3. Fix HTML or Markdown snippets: Replace outdated URLs, update image paths, or standardize sections without manually editing each file.
4. Redact or anonymize tokens: Use regex to find patterns like order numbers or IDs and replace them with placeholders before sharing data.
All operations run locally in your browser; no text is uploaded to a server. This guarantees privacy and lets the tool work offline once loaded. It is optimized for large text blocks; however, extremely large files may be slower on low-end devices. The UI is mobile-friendly, so you can perform quick fixes from tablets and phones as well.
Find & Replace (Bulk) is a versatile micro-tool that fills the gap between full editors and quick manual fixes. With regex support, previewing, selective replacement, export, and undo, it gives you control and confidence when editing large bodies of text. Paste your text, craft a safe find expression, preview matches, and replace selectively — you’ll save time and reduce mistakes.
Yes — enable Regex mode and enter a regex in the Find field. Preview first; regex can be powerful and should be tested carefully.
No — everything runs in your browser. Nothing is transmitted to our servers.
It escapes regex metacharacters so your Find input is treated exactly as typed (useful for parentheses, dots, etc.).
Use Replace Next to step through matches one at a time and confirm replacements contextually.
Yes — use the Undo button to restore the previous state during the session.
Yes — when using regex mode you can use replacement backreferences like $1, $2 to include captured groups.
No — it operates on the pasted text. For file encoding and line-ending preservation use your editor; this tool edits text content only.
By default the search is case-insensitive unless you enable Case Sensitive.
The tool guards against infinite loops by skipping zero-length matches; it will advance the search position to remain safe.
Yes — use appropriate patterns and the Unicode flags the tool applies. Newline handling depends on your regex; test with Preview.
Yes — use the Download (.txt) button to save the current content to your device.
Yes — it handles long text blocks well, but very large files may be limited by your browser/device memory.
The tool shows matches and replacement counts in the stats area. For Replace Next it increments per action; Replace All indicates matches and shows 'all' in stats.
Yes — the regex engine supports lookaheads and lookbehinds where the browser regex engine allows them. Browser compatibility for some advanced features varies.
Yes — Find & Replace (Bulk) is free to use and runs entirely in your browser with no signup required.