Regex Decoder
Paste a Regular Expression to understand what it does.
Start typing or pick an example below...
What is a Regular Expression (Regex)?
A Regular Expression is a sequence of characters that specifies a search pattern. They are widely used for finding specific text, replacing strings, or validating input (like email addresses and passwords).
How does this decoder help?
Regex syntax can be cryptic and hard to read. This tool breaks down your pattern into plain English, explaining exactly what each token (like \w, ^, or +) is doing.
Which Regex flavor is supported?
This tool uses the JavaScript (ECMAScript) regex flavor. While most basic syntax works across all languages (Python, PHP, Java), some advanced lookbehind or atomic group features may vary.