find and replace text
Find and replace text with support for case-sensitive and regex matching.
A find and replace tool helps you quickly locate and replace text patterns in documents, code, or any text content. This tool is essential for writers editing manuscripts, developers refactoring code, data analysts cleaning datasets, and anyone who needs to make bulk text changes efficiently. By using find and replace, you can save hours of manual editing, ensure consistent changes across large documents, and perform complex text transformations using regular expressions. The tool processes text entirely in your browser, providing instant results as you type without any data transmission.
What is find and replace text?
Find and replace is a text processing utility that locates specific text patterns and replaces them with different text. This online tool supports both simple text matching and advanced regular expression (regex) pattern matching. You can perform case-sensitive or case-insensitive searches, use regex for complex patterns, and see match counts in real-time. Find and replace is essential for bulk text editing, code refactoring, data cleaning, and content standardization. All processing happens client-side in your browser, ensuring privacy and instant results without server round-trips.
Common use cases
- Code refactoring: Rename variables, functions, or classes consistently across codebases
- Data cleaning: Replace formatting inconsistencies, fix typos, or standardize data formats in datasets
- Content editing: Replace outdated information, update names, or fix spelling errors across documents
- URL updates: Replace old URLs with new ones across multiple files or documents
- Format standardization: Convert date formats, phone number formats, or other structured data
- Bulk text transformation: Apply consistent changes to large amounts of text efficiently
Limitations and common mistakes
- Regular expressions require proper syntax. Invalid regex patterns will result in errors and must be corrected
- Very large texts (over 1 million characters) may experience processing delays, especially with complex regex patterns
- The tool replaces all matches at once. For selective replacement, you may need to use multiple passes or manual editing
- Regex special characters in find text must be escaped when not using regex mode, or the tool may not match as expected
- Complex regex patterns with lookaheads, lookbehinds, or other advanced features may not work in all browsers
How to use this find & replace
- Enter or paste your text into the input field
- Type the text you want to find in the "Find" field
- Enter the replacement text in the "Replace with" field
- Optionally enable case-sensitive matching or regular expression mode for advanced patterns
- View the number of matches found and see the result with all replacements applied
- Copy the result using the copy button
0 matches found
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Frequently Asked Questions
How does find and replace work?
Enter the text to find and the replacement text. The tool will replace all occurrences automatically. You can use case-sensitive matching or regular expressions for advanced pattern matching. All replacements happen in real-time as you type.
Can I replace multiple words?
Yes, you can replace multiple occurrences of the same text pattern in one operation. For different replacements, perform multiple find and replace operations sequentially.
What is regex mode?
Regular expression mode allows you to use pattern matching for complex searches. For example, use "\d+" to find all numbers, or "[A-Z]+" to find all uppercase words. Be careful with special regex characters that need escaping.
Is it case-sensitive?
By default, the tool is case-insensitive. You can enable case-sensitive matching using the checkbox option to match exact capitalization.
Can I see how many matches were found?
Yes, the tool shows the number of matches found in real-time as you type. This helps you understand how many replacements will be made before applying them.
What happens if my regex pattern is invalid?
If your regex pattern is invalid, the tool will display an error message. You must correct the pattern syntax before the replacement can be performed. Common issues include unclosed brackets, invalid escape sequences, or malformed quantifiers.