About Text Find and Replace
Replaces all occurrences of the first string with the second. Includes support for regular expressions (regex), simple strings and extended strings (which support \n, \r, \t, \b, \f and escaped hex bytes using \x notation, e.g. \x00 for a null byte).
Input: text. Output: text.
Format reference: Find / Replace background and specification
Example
Use “Try example” to load this public sample and its settings, then run it.
Settings used in this example
| Parameter | Example value | Input and choices |
|---|---|---|
| Find | {"option":"Simple string","string":"cat"} | Key/text encoding: Regex, Extended (\n, \t, \x...), Simple string |
| Replace | "dog" | Escape sequences such as \n, \r and \t are supported |
| Global match | true | On or off |
| Case insensitive | false | On or off |
| Multiline matching | true | On or off |
| Dot matches all | false | On or off |
Input
cat cat
Result
dog dog
Parameters
| Parameter | Default value | Input and choices |
|---|---|---|
| Find | {"option":"Regex","string":""} | Key/text encoding: Regex, Extended (\n, \t, \x...), Simple string |
| Replace | "" | Escape sequences such as \n, \r and \t are supported |
| Global match | true | On or off |
| Case insensitive | false | On or off |
| Multiline matching | true | On or off |
| Dot matches all | false | On or off |
Before interpreting the result
Choose whether an operation works on characters, lines or bytes. Check delimiter and regular expression options before processing logs or structured text.
How to use this page
- Paste your input or open a local file.
- Adjust tool options if needed, then choose Run tool.
- Copy the result or download the original output bytes.
Inputs and results are not added to the public catalogue or saved in the URL. Processing happens in your browser; HTTP Request and DNS over HTTPS send the requests you explicitly run. Files up to 128 MiB can be opened; decompression and image tools may have smaller processing limits. Large results have a shortened preview. Text and HTML downloads use UTF-8; binary downloads preserve output bytes. Pasted text follows browser newline handling; open a file when exact input bytes matter.