Regular Expressions 101

\w+any word character, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:gif|png|jpe?g)

1st Alternativegif

gifthe literal text gif (case insensitive)

2nd Alternativepng

pngthe literal text png (case insensitive)

3rd Alternativejpe?g

jpthe literal text jp (case insensitive)

e?optionally matches the literal e (101₁₀ / 145₈ / 65₁₆) (case insensitive)

gthe literal g (103₁₀ / 147₈ / 67₁₆) (case insensitive)

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\w+\.(?:gif|png|jpe?g)

New

Match four pictures like this: pic1.jpg, pic2.png, pic3.gif, and pic4.jpeg for example, but not these: document5.pdf and excel7.xls.