Regular Expressions 101

Explanation

Pro

^start of string

Group 1(([a-z]+)_([0-9]+)(_([0-9]+))*)

Group 2([a-z]+)

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 _ (95₁₀ / 137₈ / 5F₁₆)

Group 3([0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 4(_([0-9]+))*

*repeats the group contents below any number of times:

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Group 5([0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 6([0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

Group 7([0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 8([0-9]{1})

Character Class[0-9]{1}

{1}matches one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 9([0-9abcdef]{6}){0,1}

{0,1}repeats the group contents below at most once:

Character Class[0-9abcdef]{6}

{6}matches exactly 6 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

cthe literal c (99₁₀ / 143₈ / 63₁₆) (case sensitive)

dthe literal d (100₁₀ / 144₈ / 64₁₆) (case sensitive)

ethe literal e (101₁₀ / 145₈ / 65₁₆) (case sensitive)

fthe literal f (102₁₀ / 146₈ / 66₁₆) (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 10(jpg|gif|png)

1st Alternativejpg

jpgthe literal text jpg (case sensitive)

2nd Alternativegif

gifthe literal text gif (case sensitive)

3rd Alternativepng

pngthe literal text png (case sensitive)

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

^(([a-z]+)_([0-9]+)(_([0-9]+))*)\-([0-9]+)x([0-9]+)\-([0-9]{1})([0-9abcdef]{6}){0,1}\.(jpg|gif|png)

New

attractions_300-217x168-1.jpg
villa_27_11213-850x567-1.jpg

Extraction

attractions_300-217x168-1.jpg
villa_27_11213-850x567-1.jpg