Find & Replace Text — Case Sensitive, Whole Word, Regex

Powerful, private text replacement. Everything runs locally in your browser.

Text & Settings

0 characters · 0 words · 0 lines
0 matches

Result

Tip: Ctrl/Cmd + K focuses the text box. Ctrl/Cmd + Enter repeats the last replace.

Understanding Text Replacement

This tool allows you to efficiently modify text by locating specific words or phrases and replacing them with new content. It operates entirely within your browser, ensuring your data remains private and secure.

How It Works:

  • Original Text: This is the main body of text where you want to perform the replacement.
  • Find Text: The specific word, phrase, or character sequence you wish to locate.
  • Replace With: The new content that will substitute the "Find Text". If left empty, the "Find Text" will be removed.
  • Case Sensitivity: The replacement is case-sensitive. "Apple" will not match "apple".

Replacement Options:

  • Replace All: This option finds every instance of the "Find Text" in your "Original Text" and replaces them all with the "Replace With" text.
  • Replace First: This option only replaces the very first occurrence of the "Find Text" it finds in your "Original Text".
  • Find Next: This option highlights and jumps to the next occurrence of the "Find Text" in the "Original Text".

This tool is perfect for quick edits, cleaning up data, or standardizing text without needing complex software.

5 Fun Facts about Find & Replace

Regex is older than you think

Regular expressions date back to 1950s math (Kleene). Every modern find/replace with “.*” is using that heritage.

1950s roots

One word can kill a bill

A 2010 UK law glitch replaced “(b)” with “(c)” across pages—changing clause references and forcing a rewrite.

Careful replace

Whole-word saves names

Replacing “in” blindly turns “mint” into “mxt”. Whole-word or boundaries like \\b prevent comedy edits.

Boundary guards

Case shifts meaning

Swapping “US” vs “us” can flip from country to pronoun. Case-aware toggles avoid accidental geopolitical edits.

Context matters

Backrefs = superpower

With regex, you can reorder captures—turn “Doe, John” into “John Doe” using ([^,]+),\\s*(.+) → $2 $1.

Smart swaps

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