Find and Replace Text Online

Powerful find and replace tool with regex support, case-sensitive search, and match highlighting. Process text instantly in your browser.

Find and Replace

Input Text

1 lines • 0 characters

Find and Replace Options

Case Sensitive: When enabled, "hello" and "Hello" are treated as different. When disabled, they match each other.

Whole Word: Only matches complete words. For example, "cat" won't match "category" when this is enabled.

Regular Expression: Use regex patterns for advanced matching. Example: \d+ matches any number.

Replace All: When enabled, replaces all matches. When disabled, only replaces the first occurrence.

Free: Up to basic regex patterns • Premium: Advanced regex with lookahead/lookbehind

Why Use Our Find and Replace Tool?

Our free find and replace tool is a powerful text editor that makes it easy to search and replace text with advanced options. Whether you're editing code, cleaning data, or formatting documents, our tool provides the flexibility and precision you need.

Key Features

  • Simple Find and Replace: Basic text search and replacement with instant results
  • Case-Sensitive Search: Control whether to match exact letter cases
  • Whole Word Matching: Only match complete words, not partial matches
  • Regular Expression Support: Use powerful regex patterns for complex searches
  • Replace All or First: Choose to replace all occurrences or just the first one
  • Match Highlighting: Visual preview shows all matches before replacing
  • Match Counter: See how many matches were found instantly
  • Undo/Redo Support: Easily revert changes with built-in history
  • Multi-line Support: Find and replace across multiple lines of text
  • Real-time Preview: See results as you type

Common Use Cases

1. Code Refactoring

Rename variables, functions, or classes throughout your code. Use whole word matching to avoid partial replacements that could break your code.

2. Data Cleaning

Remove unwanted characters, fix formatting issues, or standardize data formats. Use regex to match complex patterns like phone numbers, emails, or dates.

3. Document Formatting

Update terminology, fix typos, or apply consistent styling across large documents. Replace all occurrences at once to save time.

4. URL and Link Updates

Change domain names, update protocols (http to https), or fix broken links in HTML, Markdown, or configuration files.

5. Template Processing

Replace placeholder text in templates with actual values. Use for mail merge, code generation, or document customization.

6. Log File Analysis

Anonymize sensitive information, extract specific patterns, or clean up log files for better readability.

How to Use Find and Replace

Basic Search and Replace

  1. Enter or paste your text in the input area
  2. Type the text you want to find in the "Find" field
  3. Type the replacement text in the "Replace With" field
  4. Click anywhere or the tool processes automatically
  5. Review the results and copy or download

Using Options

Enable or disable options to control how the search works:

  • Case Sensitive: Match exact capitalization
  • Whole Word: Only match complete words
  • Regular Expression: Use advanced patterns
  • Replace All: Replace every occurrence

Regular Expression Examples

Match Any Number

Pattern: \d+

Matches: 123, 456, 7890

Example: Replace all numbers with "X"

Match Email Addresses

Pattern: \b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b

Matches: user@example.com, test.email@domain.co.uk

Example: Anonymize emails

Match Phone Numbers

Pattern: \d{3}-\d{3}-\d{4}

Matches: 555-123-4567

Example: Format phone numbers consistently

Match URLs

Pattern: https?://[^\s]+

Matches: http://example.com, https://domain.com/path

Example: Update all HTTP links to HTTPS

Match Whitespace

Pattern: \s+

Matches: spaces, tabs, newlines

Example: Replace multiple spaces with single space

Match Counter and Preview

The match counter shows you exactly how many instances of your search term were found. This helps you:

  • Verify your search pattern is working correctly
  • Understand the scope of changes before replacing
  • Catch mistakes in your search pattern
  • Know if you should refine your search

The preview pane highlights all matches in your text, showing them as ⟪match⟫. This visual feedback lets you see exactly what will be replaced before you commit to the change.

Undo and Redo

Every change is tracked in the history. Use the Undo button to revert to previous versions, or Redo to move forward again. This makes it safe to experiment with different find/replace operations without fear of losing your work.

Replace All vs Replace First

Replace All (Default)

Replaces every occurrence in the entire text. This is the most common use case and saves time when you need to make consistent changes throughout a document.

Replace First Only

Replaces only the first occurrence and leaves the rest unchanged. Useful when:

  • You want to replace instances one at a time
  • The first occurrence needs special handling
  • You're testing a replacement before applying it everywhere

Tips for Effective Find and Replace

Tip 1: Use Whole Word for Safety

When replacing variable names or words, enable "Whole Word" to avoid unintended partial matches. For example, replacing "test" won't affect "testing" or "contest".

Tip 2: Check Match Count First

Before replacing, look at the match counter. If the number seems wrong, refine your search pattern or check your options.

Tip 3: Preview Before Replacing

Use the preview pane to see highlighted matches. This visual confirmation helps catch mistakes before making changes.

Tip 4: Test Regex Patterns

When using regular expressions, test your pattern on a small sample first. Complex regex can have unexpected matches.

Tip 5: Use Undo Liberally

Don't be afraid to experiment. The undo feature lets you revert any change instantly, so feel free to try different approaches.

Advanced Features (Premium)

Upgrade to Premium for advanced capabilities:

Advanced Regular Expressions

Access powerful regex features like lookahead and lookbehind assertions:

  • Lookahead: Match text only if followed by specific pattern
  • Lookbehind: Match text only if preceded by specific pattern
  • Negative Assertions: Match text NOT followed/preceded by pattern

Batch Find and Replace

Apply multiple find/replace operations in sequence:

  • Define multiple search/replace pairs
  • Execute all replacements at once
  • Save and reuse replacement sets
  • Perfect for standardizing large documents

Privacy and Security

All find and replace operations happen locally in your browser. Your text is never uploaded to any server, ensuring complete privacy. We have no access to your content.

Frequently Asked Questions

How do I replace line breaks?

Enable "Regular Expression" and use \n to match line breaks. You can replace them with spaces, commas, or any other text.

Can I undo multiple changes?

Yes! The history feature tracks all changes. Click Undo multiple times to go back through your history.

What if my regex pattern is invalid?

Invalid regex patterns won't cause errors - the tool simply won't find any matches. Check your pattern syntax if you expect matches but none are found.

How do I replace special characters?

For literal special characters (like . or *), either disable regex mode or escape them in regex mode with a backslash (e.g., \. for a period).

Can I replace with nothing (delete)?

Yes! Leave the "Replace With" field empty to delete all matches. This effectively removes the found text.

Start Finding and Replacing Now

Our free find and replace tool is ready to use - no registration, no downloads, unlimited searches. Process your text with powerful options and complete privacy.