Find & Replace

Search and replace text in any document. Toggle regex for pattern matching, case sensitivity, or whole-word constraint. See the result side-by-side as you type.

Find

Replace with

OptionsRegexMatch caseWhole word

Input0 chars

Result—

How it works

Paste the text you want to edit into the left panel.
Type the search string into Find, and what to swap it with into Replace with.
Toggle Regex to interpret your search as a regular expression — the replacement field then supports $1, $2, … back-references.
Use Match case for exact case matching, and Whole word to only match standalone tokens.

Regex tips

Capture groups: (\d+) can be referenced in the replacement as $1.
Multiline matching: each invocation uses the g (and optionally i) flag.
Invalid regex shows the parser error inline rather than silently failing.