How do I test this regex in JavaScript and TypeScript?

Use regex.test(): const regex = /\[([^\]]+)\]\((https?:\/\/[^\s\)]+)\)/g; const isValid = regex.test(inputString);

What is an example of a matching and non-matching string?

A valid matching string is "[DevTransform Suite](https://devtransform-hub.vercel.app)". A non-matching string is "![Alt text](image.png)".

Is this regex safe from ReDoS (Catastrophic Backtracking)?

Yes, this pattern is optimized for linear execution time and safe for browser-side validation without locking up the UI thread.

HomeRegex LibraryMarkdown Link Extractor Regex

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Markdown Link Extractor Regex

Parses and extracts markdown hyperlink text labels and target destination URLs [Title](https://...).

Regular Expression Pattern:

/\[([^\]]+)\]\((https?:\/\/[^\s\)]+)\)/g

Valid Match Example:

[DevTransform Suite](https://devtransform-hub.vercel.app)

Invalid / Non-Match Example:

![Alt text](image.png)

Regex Syntax Breakdown & Explanation

•\[([^\]]+)\] : Captures link anchor text inside square brackets
•\((https?:\/\/[^\s\)]+)\) : Captures valid HTTP/HTTPS destination URL in parentheses

Implementation in Popular Languages

JavaScript / TypeScript

const regex = /\[([^\]]+)\]\((https?:\/\/[^\s\)]+)\)/g;
const isValid = regex.test("[DevTransform Suite](https://devtransform-hub.vercel.app)");
console.log(isValid); // true

Python (re)

import re

pattern = r"\[([^\]]+)\]\((https?:\/\/[^\s\)]+)\)"
match = re.match(pattern, "[DevTransform Suite](https://devtransform-hub.vercel.app)")
print(bool(match)) # True

Go (regexp)

package main
import (
  "fmt"
  "regexp"
)

func main() {
  re := regexp.MustCompile(`\[([^\]]+)\]\((https?:\/\/[^\s\)]+)\)`)
  fmt.Println(re.MatchString("[DevTransform Suite](https://devtransform-hub.vercel.app)"))
}

Frequently Asked Questions

Everything you need to know regarding specifications, syntax, and security best practices.

The regular expression pattern is /\[([^\]]+)\]\((https?:\/\/[^\s\)]+)\)/g. Parses and extracts markdown hyperlink text labels and target destination URLs [Title](https://...).