Regular Expressions 101

Pro

^start of line

Group 1((?:729)?0*?123(?:[\x{00BF}-\x{1FFF}\x{2C00}-\x{D7FF}a-zA-Z])*\.(?:jpg|png))

Non-Capturing Group(?:729)?

?repeats the group contents below at most once:

729the literal text 729

0*?the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated any number of times

123the literal text 123

Non-Capturing Group(?:[\x{00BF}-\x{1FFF}\x{2C00}-\x{D7FF}a-zA-Z])*

*repeats the group contents below any number of times:

Character Class[\x{00BF}-\x{1FFF}\x{2C00}-\x{D7FF}a-zA-Z]

\x{00BF}-\x{1FFF}one character from ¿ (191₁₀) to ῿ (8191₁₀)

\x{2C00}-\x{D7FF}one character from Ⰰ (11264₁₀) to ퟿ (55295₁₀) (case sensitive)

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

No unit tests · Add a test to get started

25 tokens

^((?:729)?0*?123(?:[\x{00BF}-\x{1FFF}\x{2C00}-\x{D7FF}a-zA-Z])*\.(?:jpg|png))

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