BYTETOOLS

Find and Replace Text

Bulk find and replace text online with case-sensitive, whole-word and regex modes. See the replacement count and copy the cleaned result instantly.

  • Bulk replace every match in one pass
  • Case-sensitive and whole-word matching options
  • Regex mode with capture-group replacements ($1, $2)
  • Live replacement count and instant preview
  • Invalid regex shows an inline error, never crashes
  • 100% private — text never leaves your browser

How to use the Find and Replace Text

  1. 1

    Paste or type your text into the input box.

  2. 2

    Enter the word or pattern to find, then the replacement text.

  3. 3

    Toggle case-sensitive, whole-word or regex options as needed.

  4. 4

    Read the replacement count and review the live result below.

  5. 5

    Click Copy to grab the updated text or Clear to start over.

About the Find and Replace Text

The ByteTools Find and Replace tool swaps every occurrence of a word, phrase or pattern in your text at once. Paste your content, type what to find and what to replace it with, and the result updates live with a running count of how many replacements were made.

Turn on case-sensitive matching to distinguish 'Apple' from 'apple', whole-word matching so 'cat' never touches 'category', or regex mode for advanced patterns and capture groups. Invalid regular expressions show a clear inline error instead of breaking the tool.

Everything runs locally in your browser with JavaScript — your text is never uploaded, logged or stored. That makes it safe for editing confidential documents, source code, CSV data or long articles right on your device.

Frequently asked questions

How do I replace all instances of a word at once?

Paste your text, type the word in the Find box and the new word in the Replace box. Every occurrence is swapped automatically and the count shows how many were changed — there is no separate 'Replace All' button because it always replaces everything.

What is whole-word matching and when should I use it?

Whole-word matching only replaces the term when it stands alone, so searching 'cat' will not alter 'category' or 'concatenate'. Use it whenever you want to change a specific word without touching longer words that happen to contain it.

Can I use regular expressions to find and replace?

Yes. Enable regex mode to search with patterns like \d+ for numbers or (\w+)@(\w+) with capture groups. Reference groups in the replacement using $1, $2 and so on. If the pattern is invalid, an error message appears and your text stays untouched.

Is find and replace case-sensitive by default?

No. By default matching ignores case, so 'Color' and 'color' are both replaced. Turn on the case-sensitive option when the capitalization matters, such as distinguishing a brand name from a common word.

Is my text uploaded when I use find and replace?

No. The whole operation runs in your browser using JavaScript. Nothing is sent to a server, so it is safe for private notes, code and unpublished writing.

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