Regular Expressions 101

^start of line

Character Class[A-Z]

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

Character Class[a-z]+

+matches at least one character from the set below:

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:jpg|png|gif)

1st Alternativejpg

jpgthe literal text jpg (case sensitive)

2nd Alternativepng

pngthe literal text png (case sensitive)

3rd Alternativegif

gifthe literal text gif (case sensitive)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Non-Capturing Group(?: [A-Z][a-z]+\.(?:jpg|png|gif),){3,}

{3,}repeats the group contents below at least 3 times:

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[A-Z]

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

Character Class[a-z]+

+matches at least one character from the set below:

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:jpg|png|gif)

1st Alternativejpg

jpgthe literal text jpg (case sensitive)

2nd Alternativepng

pngthe literal text png (case sensitive)

3rd Alternativegif

gifthe literal text gif (case sensitive)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

$end of line

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.

Search reference

Regular Expression

^[A-Z][a-z]+\.(?:jpg|png|gif),(?: [A-Z][a-z]+\.(?:jpg|png|gif),){3,}$

New

Chrysanthemum.jpg, Desert.png, Hydrangeas.gif, Jellyfish.jpg, Koala.jpg, Lighthouse.png,
Chrysanthemum.jpg, Desert.png, Hydrangeas.gif,
Chrysanthemum.jpg,
Chrysanthemum.jpg, Desert.png,

Regular Expression

Extraction