Find and Replace String

What is Find and Replace String?

Replaces every occurrence of a search string in your text, live as you type. There's no need to click a "Replace" button; every match updates as soon as you adjust the search term, replacement, or options. Toggle case sensitivity when you need an exact match, or treat the search term as a full regular expression for pattern-based replacements like stripping all digits or normalizing whitespace. It's useful for quick text cleanup, renaming a variable across a pasted code snippet, fixing a repeated typo, or reformatting log output, without opening a full editor. Everything runs entirely in your browser; nothing you paste is sent to a server.

How to Use Find and Replace

1. 1

   Paste the Text: Enter the text, code snippet, or log output you want to edit.

2. 2

   Enter the Search Term and Replacement: Type what to find and what to replace it with.

3. 3

   Toggle Case Sensitivity or Regex: Enable either option as needed for your pattern.

4. 4

   Copy the Result: Use the copy button to copy the updated text.

How It Works

Every occurrence of the search term in your text is replaced live, re-run on every keystroke in any of the three fields (text, search term, replacement). With regex mode off, the search term is matched as a literal string, no special characters. With regex mode on, the search term is compiled as a JavaScript regular expression, so capture groups and character classes work as expected. Case sensitivity is an independent toggle from regex mode, and you can combine either with either.

Example

Text: "The cat sat on the mat." Find: "at", Replace: "og" gives "The cog sog on the mog."

With regex mode on, Find: "[aeiou]", Replace: "*" turns "The cat sat" into "Th* c*t s*t", replacing every vowel.

Common Use Cases

Renaming a variable across a pasted code snippet, fixing a repeated typo across a whole document, normalizing inconsistent spacing or punctuation in log output, or doing a quick pattern-based cleanup (stripping digits, collapsing whitespace) without opening a code editor.