Find & Replace

What is Find & Replace?

Find & Replace is one of the most fundamental text editing operations. It allows you to search for a specific piece of text and replace it with another piece of text, either one occurrence at a time or all at once. This tool extends the basic concept with support for regular expressions, case sensitivity options, and whole word matching, making it powerful enough for complex text manipulation tasks.

Whether you need to fix a recurring typo across a document, reformat data, clean up imported text, or perform batch text transformations, Find & Replace saves significant time compared to making changes manually. Our browser-based tool provides this functionality without requiring any software installation.

The tool runs entirely in your browser, so your text never leaves your device. This makes it safe for processing sensitive content like confidential documents, personal data, or proprietary code.

How to Use This Tool

Paste or type your text into the main text area. Enter the text you want to find in the "Find" field and the replacement text in the "Replace with" field. The match count updates in real time as you type, showing how many occurrences will be affected.

Configure the available options to fine-tune your search:

• Case sensitive-- When enabled, the search distinguishes between uppercase and lowercase letters. For example, searching for "hello" will not match "Hello" or "HELLO". When disabled, the search is case-insensitive.
• Whole word-- When enabled, the search only matches complete words. For example, searching for "cat" will not match "catalog" or "scatter". Word boundaries are defined by non-word characters such as spaces, punctuation, and line breaks.
• Use regex -- When enabled, the find field is interpreted as a regular expression pattern. This allows for powerful pattern matching using special characters like. (any character), * (zero or more),+ (one or more), and capture groups with parentheses.

Click "Replace All" to apply the replacement to every match in the text. The result appears in the output area below. Use the "Copy" button to copy the result to your clipboard.

Regex Tips

Common Patterns

Here are some useful regular expression patterns for common tasks:

• \d+ -- Match one or more digits (useful for finding numbers)
• \s+ -- Match one or more whitespace characters
• [A-Z][a-z]+ -- Match a word starting with an uppercase letter followed by lowercase letters
• ^$ -- Match an empty line (useful for cleaning up double blank lines)
• (\w+)@(\w+)\.(\w+) -- Match a simple email pattern

Capture Groups and Backreferences

You can use parentheses to create capture groups and reference them in the replacement text using $1, $2, etc. For example, searching for (\w+), (\w+) and replacing with$2 $1 will swap two comma-separated words.

Frequently Asked Questions

What is the difference between normal search and regex search?

In normal search mode, the find field is treated as literal text. Every character you type is matched exactly as entered. In regex mode, the find field is interpreted as a regular expression pattern, where special characters like ., *, +, and ? have special meanings. This allows for much more flexible and powerful pattern matching.

Can I undo a replacement?

The tool does not have an undo button. However, your original text remains in the input area, and the result appears separately in the output area. You can always go back to the original text and try a different replacement. We recommend keeping your original text somewhere safe before performing large batch replacements.

Does the match count update in real time?

Yes. As you type in the find field, the match count updates immediately to show how many occurrences exist in the current text. This helps you verify your search pattern before applying the replacement.

Is there a limit to how much text I can process?

The tool runs in your browser, so the limit depends on your device's memory. Most modern devices can handle texts with hundreds of thousands of characters without issues. For very large texts (megabytes), you may experience slower performance.