Find and Replace

Search and replace text with advanced options like regex and match case

Find & Replace

Find

Replace with

Match CaseWhole Words OnlyUse RegexPreview Mode

Input Text

Characters: 0 | Lines: 1

Preview / Output

How to Use the Find and Replace Tool

1.Enter your text: Paste your text into the input area, upload a file (.txt, .md, .csv), or drag and drop a file directly into the text area.
2.Specify find and replace terms: Enter the text you want to find in the "Find" field and the replacement text in the "Replace with" field. For multiple replacements, switch to Batch mode.
3.Configure options: Enable Match Case for case-sensitive search, Whole Words Only to match complete words, Use Regex for pattern matching, or Preview Mode to see changes before applying.
4.Replace and review: Click "Replace First" for single replacement or "Replace All" for all occurrences. View statistics showing matches found and replacements made. Use Undo/Redo to revert changes.
5.Copy or download: Copy the result to clipboard or download as a text file. In Preview Mode, click "Apply" to move the output back to input for further editing.

What is a Find and Replace Tool?

A Find and Replace Tool is an essential text editing utility that allows you to search for specific words, phrases, or patterns in your text and replace them with different content. This tool is invaluable for writers, developers, content editors, and anyone who needs to make bulk text modifications quickly and accurately.

Our advanced find and replace tool runs entirely in your browser, ensuring complete privacy as no data is sent to any server. It supports sophisticated features like regular expressions for pattern matching, case-sensitive searching, whole word matching, and batch replacements where you can define multiple find-replace pairs to process simultaneously.

The tool includes a preview mode that lets you see changes before applying them, comprehensive undo/redo functionality to revert mistakes, and real-time statistics showing how many matches were found and how many replacements were made. Whether you're updating variable names in code, correcting repeated typos in documents, or standardizing terminology across large text files, this tool provides the power and flexibility you need while maintaining a clean, intuitive interface.

Common Use Cases

💻 Code Refactoring

Rename variables, functions, or classes across code files. Update API endpoints or configuration values in bulk.

📝 Content Editing

Fix repeated typos, update brand names, or standardize terminology across articles and documentation.

🔗 URL Updates

Replace old domain names with new ones, update HTTP to HTTPS, or modify URL parameters across link lists.

📊 Data Cleaning

Standardize data formats, remove unwanted characters, or normalize text in CSV files and datasets.

🎨 Template Customization

Replace placeholder text in templates, update copyright years, or personalize boilerplate content.

🔍 Pattern Matching

Use regex to find and replace complex patterns like email addresses, phone numbers, or date formats.

Key Benefits

✓Instant Processing: Replace thousands of occurrences in milliseconds with optimized algorithms.
✓100% Privacy: All processing happens in your browser - no data is uploaded to servers.
✓Advanced Options: Match case, whole words, regex patterns, and batch replacements for complex tasks.
✓Preview Mode: See changes before applying them to avoid mistakes and verify results.
✓Undo/Redo Support: Full history tracking lets you revert changes or try different approaches.
✓Real-time Statistics: See exactly how many matches were found and replacements made.
✓Auto-save: Your input text is automatically saved to browser storage for convenience.

Frequently Asked Questions

How does the Match Case option work?

When Match Case is enabled, the tool performs case-sensitive searching, meaning "Word", "word", and "WORD" are treated as different strings. This is useful when you need to replace specific capitalization patterns without affecting others. For example, if you're replacing "API" with "Application Programming Interface" but want to keep "api" unchanged, enable Match Case. When disabled (default), the search is case-insensitive, so all variations of the word will be found and replaced regardless of capitalization.

What is the difference between "Replace First" and "Replace All"?

"Replace First" replaces only the first occurrence of your search term in the text, which is useful when you want to make selective changes or test your replacement before applying it everywhere. "Replace All" replaces every occurrence of the search term throughout the entire text in a single operation. The tool shows you how many matches were found and how many replacements were made, so you can verify the results. You can always use the Undo button to revert changes if needed.

How do I use Regular Expressions (Regex)?

Enable the "Use Regex" checkbox to activate regular expression pattern matching. Regex allows you to find complex patterns instead of literal text. For example, use "\d3-\d3-\d4" to find phone numbers in the format 123-456-7890, or "[a-z]+@[a-z]+\.[a-z]+" to find email addresses. You can use capture groups in your find pattern and reference them in the replacement with $1, $2, etc. For instance, find "(\w+) (\w+)" and replace with "$2 $1" to swap the order of two words. Note that invalid regex patterns will be ignored to prevent errors.

What is Batch Replace mode and when should I use it?

Batch Replace mode allows you to define multiple find-replace pairs that are processed sequentially in a single operation. This is incredibly useful when you need to make several different replacements at once. For example, you might want to replace "color" with "colour", "center" with "centre", and "analyze" with "analyse" to convert American English to British English. Each batch item can be individually enabled or disabled using the checkbox, so you can selectively apply certain replacements. Click "+ Add Another" to add more pairs, and use the ✕ button to remove unwanted items. All enabled pairs are processed in order from top to bottom.

How does Preview Mode work?

Preview Mode (enabled by default) shows the replaced text in a separate output area without modifying your original input. This lets you verify the changes before committing to them. You can review the output, check the statistics, and if everything looks correct, click the "Apply" button to move the output back to the input area for further editing or additional replacements. When Preview Mode is disabled, replacements are applied directly to the input text, which is faster but doesn't give you a chance to review changes first. Preview Mode is especially useful when working with important documents or when using regex patterns where you want to verify the results.

Is my text data secure when using this tool?

Absolutely! This tool runs entirely in your browser using client-side JavaScript. Your text never leaves your device or gets uploaded to any server. All find and replace operations, including regex processing and batch replacements, happen locally on your computer. The only data stored is your input text in your browser's localStorage for convenience (auto-save feature), which remains on your device and can be cleared at any time. You can even use this tool offline once the page has loaded. This makes it completely safe for working with sensitive documents, proprietary code, or confidential information.