Regular Expressions 101

Pro

Group 1(!\[.*?]\()

!the literal ! (33₁₀ / 41₈ / 21₁₆)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

.*?any character (except for line terminators), repeated any number of times

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:https:\/\/example\.com\/*)?

?repeats the group contents below at most once:

https:the literal text https: (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

examplethe literal text example (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case sensitive)

\/*the literal / (47₁₀ / 57₈ / 2F₁₆) , repeated any number of times

Group 2(.*?)

.*?any character (except for line terminators), repeated any number of times

Group 3(\))

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

(!\[.*?]\()(?:https:\/\/example\.com\/*)?(.*?)(\))

New

Some text ![test1](assets/image1.png) 
some text ![test2](https://example.com/assets/image2.png) some other text 
 ![test3](assets/image3.png)

$1https://example.com/$2?raw=true$3

Some text ![test1](assets/image1.png) 
some text ![test2](https://example.com/assets/image2.png) some other text 
 ![test3](assets/image3.png)