Precision-engineered find & replace tool for the modern web.
About Find & replace tool
Find & replace tool is a browser-based text-processing workspace designed for writers, editors and engineers. It handles case conversion, whitespace cleanup, line-level sorting and deduplication, find-and-replace, and diff/merge operations on documents as long as several tens of thousands of lines. Every transformation runs on-device — so drafts, client work and source code stay private while you work.
Problems This Tool Solves
Copy-pasted text from PDFs, emails and web pages is full of invisible control characters and weird whitespace. - Find & replace tool normalises encoding, collapses whitespace and strips invisible characters in one click.
Manual case conversion and slug generation for hundreds of items is a long, error-prone afternoon. - Find & replace tool transforms entire lists in bulk with a single toggle.
Pasting data into an online tool means trusting a third-party server with your content. - Find & replace tool runs 100% inside your browser — nothing you paste is transmitted, logged, or stored.
Find-and-replace inside a word processor can silently break formatting or miss regex edge cases. - Find & replace tool performs pure-text regex replace with a live preview of every match before you commit.
How to Use
Paste or drop your text - Accepts raw paste, .txt/.md files and direct clipboard with formatting stripped.
Choose the transformation - Pick case, whitespace, sort, dedup, slug, diff or regex replace from the toolbar.
Preview the change - A live diff shows exactly what will change before you apply it.
Copy or export - Copy to clipboard or download the transformed text as .txt, .md or .csv.
Why This Tool Is Better
Scales to long documents - Handles tens of thousands of lines without lag thanks to a streamed WebAssembly engine.
Character-level fidelity - Unicode, RTL text and rare whitespace characters are preserved or normalised exactly as configured — no silent corruption.
Live preview - Every operation previews the result before you commit, so destructive changes can be reviewed and rolled back.
Category: Text & Cleanup Tools
This tool runs entirely in your browser. No data is sent to any server. Try the Find & replace tool now - it is free.