Find and Replace: Regex-Powered Text
Find and replace text with plain or regex patterns — case-sensitive, global, and multi-line support.
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Tags: find replace text online, text find replace tool, regex search replace
Find and Replace: Regex-Powered Text Part of our complete guide to this topic — see the full series. The Find and Replace tool substitutes text patterns — plain strings or regular expressions — across any block of text in your browser. The ECMAScript specification defines the regex syntax used in JavaScript-based text processing, and MDN's String.replace() documentation covers the replacement pattern syntax including capture group references. --- What is Beyond Ctrl+F? Ctrl+F in a document editor finds individual matches. A dedicated find-replace tool handles bulk transformation across pasted content without requiring a specific editor or command-line access. Common scenarios: Replace all occurrences of a brand name across marketing copy. Swap placeholder values in a template ( → actual…
Frequently Asked Questions
How do I find and replace text online?
Paste your text into the Find and Replace tool, enter the search pattern in the Find field and the replacement in the Replace field, then click Replace. All matches are replaced globally by default.
How do I use regex in find and replace?
Enable the Regex toggle. The Find field is interpreted as a regular expression pattern. Capture groups (parentheses) can be referenced in the Replace field as $1, $2, etc. For example, find '(\w+)@(\w+)' and replace with '$2/$1' to swap the parts.
How do I replace text case-insensitively?
Enable the Case-insensitive toggle. Matches will be found regardless of case. The replacement text is inserted exactly as typed — case is not modified in the output unless you use regex transformations.
How do I find and replace across multiple lines?
Enable Multiline mode. This changes the behavior of ^ and $ in regex to match the start and end of each line rather than the entire input. Without multiline mode, ^ matches only the very start of the text.
How do I undo a find-replace operation?
The browser tool does not retain history, so paste a fresh copy of the original text and start over. For repeated operations, work in a text editor with undo history (Ctrl+Z / Cmd+Z) or use version-controlled files.
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