Text Find & Replace
Apply multiple find and replace rules sequentially to plain text with optional case sensitivity and regular-expression matching.
Run tool
This online text utility applies sequential find-and-replace operations to plain text. You can supply multiple substitution steps in an ordered list to update terminology, fix formatting, or normalize data across large paragraphs. Each rule executes in sequence, meaning subsequent rules operate directly on text modified by earlier replacements. By default, literal searches match text without regard to uppercase or lowercase letters. When precise casing is needed, you can enable case sensitivity on any individual rule. The tool also supports regular expressions for pattern-based substitutions, allowing you to match variable sequences, digits, or structured tokens. If a regular-expression pattern contains syntax errors, the tool skips that specific rule and processes the remaining rules without halting the entire process. Empty search fields are ignored automatically. When no text is provided, the tool returns empty text output.
Instructions
- Paste or type your input text into the Text area.
- Define one or more replacement rules with search terms and replacement strings.
- Set optional rule settings such as case sensitivity or regular-expression mode.
- Click Run to process all rules in top-to-bottom sequence.
- Copy the modified text from the output area.
Examples
- Updating multiple legacy product names across a document by chaining rules to replace 'WidgetA' with 'GadgetX' and 'WidgetB' with 'GadgetY'.
- Using a regular-expression rule like '\d{3}-\d{4}' to find and reformat telephone number patterns in customer notes.
FAQ
Are replacement rules executed simultaneously or in order?
Rules are processed in sequential order from top to bottom. Each rule operates on the text output created by earlier rules.
Is text searching case-sensitive by default?
Searches are case-insensitive by default. You can enable case sensitivity for any individual rule when exact character casing is required.
What happens if a regular expression contains invalid syntax?
If a regular-expression rule contains a syntax error, the tool records the error for that rule, skips it, and continues processing the remaining rules.
What happens if the text input is left empty?
When no text is supplied, the tool returns an empty text output without executing any replacement rules.