What Is Find and Replace?
Find and Replace is a text transformation tool that searches for a specific word, phrase, or pattern in your text and replaces every occurrence with something else. It works instantly as you type — no need to click a button to see results.
It supports both plain text search and regular expressions (regex), with optional case sensitivity. This tool runs entirely in your browser — no text is sent to any server.
How to Use This Tool
Enter Your Text
Type or paste text into the editor, upload a .txt file, or drag and drop a file onto the text area.
Type Your Search Term
Enter the word or pattern you want to find. The match count updates in real time as you type.
Enter Replacement
Type what you want to replace the matches with. Leave empty to delete all matches. Results update instantly.
Copy or Download
Use Copy to copy the result to clipboard, Download to save as a .txt file, or Clear to start over.
Features Explained
Real-Time Matching
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Results update instantly as you type in any field. The match count shows exactly how many occurrences were found, and the result textarea reflects all replacements immediately.
Case Sensitive Mode
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By default, matching is case-insensitive — searching for "hello" matches "Hello", "HELLO", and "hello". Enable Case Sensitive to match exact casing only.
Regular Expression Support
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Enable Use Regex to treat your search term as a regular expression. This allows powerful pattern matching — for example, \d+ matches any number, and (foo|bar) matches either word. In regex mode, replacement strings support capture groups like $1.
File Upload & Drag and Drop
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Upload a .txt file using the Upload button or drag and drop a text file directly onto the text area. The file contents replace the current text in the editor.
Who Is This Tool For?
Developers
Rename variables, update URLs, replace API endpoints, or refactor strings across code snippets.
Writers & Editors
Fix recurring typos, update names or terms throughout a document, or standardize spelling.
Data Analysts
Clean CSV data, replace delimiters, remove unwanted characters, or reformat date strings.
Marketers
Update brand names, swap placeholder text, or batch-edit campaign copy across templates.
Students
Clean up notes, standardize formatting, or practice regular expressions with real-time feedback.
System Administrators
Edit configuration files, replace paths, update hostnames, or modify log formats.
Common Regex Patterns
| Pattern | Matches | Example |
|---|---|---|
| \d+ | One or more digits | "123", "42", "7" |
| \s+ | One or more whitespace characters | Spaces, tabs, newlines |
| [A-Z][a-z]+ | Capitalized words | "Hello", "World" |
| \b\w{5}\b | Exactly 5-letter words | "Hello", "World" |
| (foo|bar) | Either "foo" or "bar" | Alternation group |
| ^.*$ | Entire line (multiline off) | Full line match |
Tips for Find and Replace
Delete matches by leaving Replace empty
To remove all occurrences of a word, type it in Find and leave the Replace field blank. Every match will be deleted from the output.
Use regex for pattern matching
Enable Use Regex to search for patterns like \d+ (numbers), \s+ (whitespace), or custom patterns. Much more powerful than plain text search.
Capture groups in regex mode
In regex mode, use parentheses to capture groups and $1, $2 in the replacement. For example, find (\w+)-(\w+) and replace with $2-$1 to swap words around a hyphen.
Check match count before replacing
The match count shows how many replacements will be made. Verify the count looks right before copying the result to catch unexpected matches.
Case sensitivity matters
Turn on Case Sensitive when you need exact casing — for example, replacing "React" without affecting "react" in prose text.
Upload large files
For large documents, use the Upload button or drag and drop instead of pasting. The tool handles files efficiently in the browser.
Privacy & Security
This tool runs 100% in your browser. Your text is never uploaded to any server. It is stored only in your browser's local storage so it persists when you refresh the page.
You can clear it at any time using the “Clear” button. No cookies are used, no analytics track your text content, and no third-party services have access to what you type.