Find & Replace with Regex Engine
Perform advanced batch find and replace across multi line text with case sensitivity, whole word boundaries, and full regular expression capture groups.
How to Use the Find & Replace with Regex Engine
- 1 Paste your source text in the main editor.
- 2 Enter the search pattern in the "Find" field and desired replacement in "Replace With".
- 3 Toggle "Match Case", "Match Whole Word", or "Use Regular Expression" (`$1`, `$2` capture groups supported).
- 4 View real time replacement count and copy the finalized text.
Methodology & Algorithmic Standards
Compiles safe JavaScript `RegExp` patterns client side with flags `g` (global), `i` (case-insensitive), and word boundaries `\b`. Safeguards against infinite zero width loops.
Frequently Asked Questions
Can I use regex capture groups in the replacement? ▼
Yes! Use `$1`, `$2`, etc. in the "Replace With" field to rearrange matched tokens dynamically.
What happens if I write an invalid regular expression? ▼
The tool catches syntax errors safely in real time, displaying a helpful error hint without crashing the workspace.
Is my text safe when processing confidential logs? ▼
100% safe. All matching and substitution run strictly in your browser without network communication.
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