Text Replace
Find and replace text patterns instantly with case-sensitive options
Text find and replace tool. Search for specific text and replace all occurrences with new text instantly. Supports case-sensitive mode, whole-word matching
Text find and replace tool. Search for specific text and replace all occurrences with new text instantly. Supports case-sensitive mode, whole-word matching
This find and replace tool performs bulk text substitutions efficiently, handling everything from simple name swaps to complex data cleanup tasks:
Bulk find and replace is powerful when used deliberately, but careless replacements can corrupt data or introduce errors. The safest approach is iterative: start with a small sample of your text to verify the replacement behaves as expected before applying it to the full dataset. Always keep a backup of your original text — this tool shows both input and output simultaneously, so you can reference the original if something goes wrong. For data cleaning tasks, chain multiple replacements together: first normalize whitespace (replace multiple spaces with single spaces), then fix common typos, then standardize formatting. When replacing in code, be especially careful with variable names — replacing 'data' could accidentally change 'getData', 'userData', and 'dataLoader'. Whole-word matching prevents these accidental substitutions. For CSV or structured data, remember that commas, quotes, and line breaks have special meaning — replacing text within quoted fields requires precision to avoid breaking the data structure.
Consider these practical situations where bulk text replacement proves invaluable. Renaming variables across a codebase: a developer refactoring a project might need to rename 'oldApiUrl' to 'newApiEndpoint' across dozens of files — doing this manually is error-prone, but find and replace catches every occurrence consistently. Standardizing date formats: converting 'MM/DD/YYYY' to 'YYYY-MM-DD' across exported spreadsheets or log files eliminates downstream parsing errors. Updating contact information: changing a company phone number or address across marketing materials, contracts, and documentation ensures consistency. Fixing encoding artifacts: replacing mojibake like 'é' with the correct character 'é' after encoding mismatches. Normalizing whitespace: removing extra spaces, tabs, or inconsistent line endings that accumulate when merging text from different sources. Converting bullet styles: replacing dash bullets (-) with asterisk bullets (*) across a document for uniform formatting. Each of these tasks that would take manual effort across many documents can be completed in seconds with find and replace.
Yes, the tool offers case-sensitive matching by default, meaning 'Hello' and 'hello' are treated as different strings. You can toggle case-insensitive mode to match regardless of capitalization. This distinction is crucial when replacing brand names, variable names, or any text where case carries meaning.
The tool performs one replacement at a time. For multiple different replacements, apply them sequentially — use the output of one replacement as the input for the next. This sequential approach actually gives you more control, as you can verify each replacement step before proceeding to the next.
By default, the tool replaces all occurrences including partial matches. For example, replacing 'cat' in 'category catalog cat' would change all three instances. Enable whole-word matching to restrict replacements to complete words only, so 'cat' wouldn't match inside 'category' or 'catalog'.
The tool handles very large texts efficiently since all processing occurs locally in your browser. Typical use cases like documents, code files, and data exports process instantly. Extremely large inputs (millions of characters) may experience minor delays on slower devices, but there's no artificial limit imposed by the tool.
This version performs literal text matching only, not regex patterns. If you need regex-powered find and replace with pattern matching, character classes, and wildcards, our Regex Tester tool can help you build the patterns, but the actual replacement would need to be done in your code editor or programming language.
All find and replace operations happen entirely in your browser. Your text never leaves your device, is never transmitted to any server, and is never stored. This makes the tool safe for processing sensitive documents, confidential data, or proprietary code.