Find and replace text in bulk — supports regex and case-sensitive matching
Batch text replacement is a fundamental text processing operation: updating a brand or product name throughout a long document, replacing deprecated API endpoints in a configuration file, standardising inconsistent date formats, substituting placeholder values with real ones, or anonymising names in a document before sharing. This find-and-replace tool processes plain text with support for case-sensitive and case-insensitive matching, whole-word matching, and regular expression patterns for advanced replacements such as reformatting all dates or replacing all email addresses. A replacement count shows how many substitutions were made. Process any length of text instantly in your browser without sending content to any server. Consider a few common scenarios where this tool proves invaluable. A software developer migrating a project from one domain to another can paste their entire configuration file and swap every occurrence of the old base URL in seconds, without risking manual editing errors across dozens of entries. A content editor preparing a white-label document can replace a client company name throughout a lengthy report before delivery, confident that not a single instance is missed. A data analyst working with exported CSV or log files can use a regular expression to normalise hundreds of inconsistently formatted phone numbers or timestamps into a single standard format in one pass. Developers, technical writers, data analysts, and office professionals who work with large volumes of structured or semi-structured text benefit most from this tool, particularly when the same transformation needs to apply uniformly across a long document or dataset. The whole-word matching option prevents partial-word collisions — for example, replacing "app" without accidentally changing "application" — while regex support unlocks transformations that go far beyond simple string substitution. Because all processing happens locally inside your browser, sensitive documents such as contracts, internal reports, or customer data never leave your device, making this a safe choice even for confidential content.
Regex support — Toggle Regular Expression mode to find complex patterns, not just literal strings.
Case-sensitive matching — Toggle case sensitivity to match 'Apple' without matching 'apple'.
Replace all or step through — Replace every match at once, or step through matches one by one.
Delete mode — Leave the replacement field blank to delete all occurrences of the found text.