Find and replace text instantly with support for both literal string matching and powerful regular expressions. Whether you need to make a single substitution or perform bulk edits across a large block of text, this tool handles it with precision. Choose between replacing the first match only or replacing all occurrences, and see the exact number of replacements made. This is invaluable for developers cleaning up code, writers standardizing terminology, data analysts transforming datasets, or anyone who needs to modify text efficiently. All processing runs entirely client-side in your browser — your text is never sent to any server, ensuring complete privacy for sensitive content.
About Find and Replace
Find and Replace is a fundamental text manipulation tool that searches for specified text patterns and substitutes them with new content. In literal mode, it performs exact string matching — perfect for simple word or phrase substitutions. In regex mode, it leverages JavaScript regular expressions to match complex patterns such as email addresses, phone numbers, whitespace sequences, or any custom pattern you define. The tool displays the modified text along with a count of replacements made, giving you full visibility into the changes. All operations are performed client-side in your browser, making it safe for confidential or sensitive text. For more advanced text processing, you can also use our Remove Duplicate Lines or Case Converter tools.
How to Use Find and Replace
- Enter the text or pattern you want to find in the Find field. Toggle Use regex if you need pattern matching.
- Enter the replacement text in the Replace with field. In regex mode, you can use capture groups like
$1. - Paste or type your source text in the Text area.
- Choose whether to Replace all occurrences or only the first match.
- Click Replace to see the result and the number of substitutions made. Use Copy result to copy the output.
Key Features
- Literal and regex modes — Switch between simple text matching and powerful regular expression patterns.
- Replace all or first only — Control whether every occurrence is replaced or just the first match.
- Replacement counter — See exactly how many substitutions were made for verification.
- Regex capture groups — Use
$1,$2, etc. in replacement text to reference matched groups. - Client-side processing — Your text never leaves your browser, ensuring complete privacy.
- Instant results — Get modified text immediately with one click.
When to Use This Tool
- Standardizing terminology or formatting across a document (e.g., replacing "colour" with "color").
- Cleaning up data exports by removing or replacing unwanted characters or patterns.
- Refactoring code snippets — renaming variables, updating class names, or changing import paths.
- Converting date formats, phone number formats, or other structured text patterns using regex.
- Removing sensitive information from text before sharing it.
Technical Details
In literal mode, the tool uses JavaScript's String.prototype.replace() with an escaped version of your search string to avoid unintended regex interpretation. In regex mode, your pattern is compiled as a JavaScript RegExp object with optional global flag based on the "Replace all" setting. Capture groups in the pattern can be referenced in the replacement string using $1 through $9. Invalid regex patterns are caught and reported with a descriptive error message. The tool processes text of any length, though extremely large inputs may take slightly longer in the browser. All computation happens on the client side with zero server interaction.
Conclusion
Find and Replace is an essential text editing tool that combines simplicity with the power of regular expressions. Whether you're making quick text substitutions or performing complex pattern-based transformations, this browser-based tool delivers instant, private results without any server dependency.