Regular Expressions 101

Pro

^start of line

Group 1((?:729)?\d+(?:[a-zA-Z])*\.(?:jpg|png))

Non-Capturing Group(?:729)?

?repeats the group contents below at most once:

729the literal text 729

\d+a digit, repeated at least once

Non-Capturing Group(?:[a-zA-Z])*

*repeats the group contents below any number of times:

Character Class[a-zA-Z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:jpg|png)

1st Alternativejpg

jpgthe literal text jpg (case sensitive)

2nd Alternativepng

pngthe literal text png (case sensitive)

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

^((?:729)?\d+(?:[a-zA-Z])*\.(?:jpg|png))

New

12345#jpg
7290000232.png
0000232.jpg
232.png
000005234abcdef.jpg
abcede23123.jpg

12345#jpg
7290000232.png
0000232.jpg
232.png
000005234abcdef.jpg
abcede23123.jpg