CaseWren

Find and Replace Online

Search & replace with case, whole-word and regex power.

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About the Find and Replace

Rename a variable across a whole document, strip every phone number from a pasted page, or swap date formats in one pass — this is a full find-and-replace workbench, not just a swap box. Results preview live as you type, with a match counter so you always know the blast radius before you commit.

Three switches unlock precision: Case sensitive for exact casing, Whole word so "cat" never touches "catalog", and Regex for pattern power like turning \d{4}-\d{2}-\d{2} into another format. Invalid patterns are flagged instantly with a clear error instead of failing silently.

How to use it

  1. 1Paste your text and type what to find and what to replace it with.
  2. 2Tune the match with Case sensitive, Whole word or Regex switches.
  3. 3Check the live preview and match count, then hit Replace all or Copy.

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