Guides JP

Text Replace Tool

Find and replace text with multiple patterns, regex, and highlight support.

Last updated: 2026/10/16 Text Feedback & bug reports
Input Text
Replacement Settings
→
Replace only the first N matches per pair
Text Formatting
0 Matches
0 Replaced
Replacement preview (count per rule)
Enter a search term to see the number of replacements made by each rule here.
Result

How to Use

1

Enter Text

Type or paste the text you want to edit in the input area above.

2

Set Search & Replace

Enter search and replacement strings. You can add multiple patterns.

3

Adjust Options

Use options and text formatting as needed, and see results in real-time.

About This Tool

A powerful text replacement tool with multiple pattern support, regex, and change highlighting for professional editing tasks.

Key Features

  • Multiple Pattern ReplaceExecute multiple search-replace pairs at once.
  • Change HighlightingReplaced sections are highlighted in color.
  • Text FormattingRemove empty lines, clean up spaces with one click.
  • Privacy ProtectionData is processed in browser, never sent to servers.

Use Cases

  • Bulk editing text files
  • Renaming variables in code
  • Bulk fixing CSV data
  • Standardizing document terminology
  • Removing or replacing HTML tags

Related Tools & Guides

To test regular expression patterns, try the Regex Checker. For sorting lines or removing duplicates, use the Text Sort & Dedupe tool, and for formatting bullet lists, the List Formatter is handy. Learn the basics of regex in our Intro to Regular Expressions guide.

FAQ

Can I replace multiple patterns at once?
Yes, use "Add Replacement Pair" to set multiple search-replace patterns. They are applied in order.
How do I replace line breaks?
In regex mode, type "\n" in the search field to find and replace line breaks.
What is "Whole word only"?
When enabled, matches only at word boundaries for alphanumeric text. Example: "cat" won't match "category". Does not work for Japanese.
Can I limit replacements?
Yes, enter a number in "Replacement limit" to replace only the first N matches for each replacement pair.
Is my data saved?
No, your text is not sent to or saved on any server. All processing is done in your browser.
What is "Multiline mode" for?
It makes the regex anchors ^ (start) and $ (end) match the start and end of each line instead of the whole text. Useful, for example, when you want to add a symbol at the start of every line. You can experiment with regex syntax in the Regex Checker.
What does the replacement preview show?
It lists how many replacements each rule (search/replace pair) actually made. This helps you see which rule is taking effect when applying multiple rules at once.

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Related Guides

Common Regex Patterns: Email, Phone, URL, ZIP, Date Examples and Pitfalls Practical regular expression patterns for everyday use, with examples for email, phone number, URL, postal code, date, and full-width/half-width text. Covers metacharacters, quantifiers, and groups, plus why you should not over-trust regex.