Regular Expressions 101

<imgthe literal text <img (case insensitive)

Negated Character Class[^>]+

+matches at least one character outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

src=the literal text src= (case insensitive)

\\?optionally matches the literal \ (92₁₀ / 134₈ / 5C₁₆)

Non-Capturing Group(?:"|')

1st Alternative"

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Negated Character Class[^.]+

+matches at least one character outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

gifthe literal text gif (case insensitive)

\\?optionally matches the literal \ (92₁₀ / 134₈ / 5C₁₆)

Non-Capturing Group(?:"|')

1st Alternative"

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\>the literal > (62₁₀ / 76₈ / 3E₁₆)

Global pattern flags

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

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

<img[^>]+src=\\?(?:"|')[^.]+\.gif\\?(?:"|')[^>]*\>

New

this is <img src=\"test.gif\"/> something with an <img src=\"test.png\"/> in it.
this is <img src="test.gif"/> something with an <img src="test.png"/> in it.
this is <img src='test.gif'/> something with an <img src='test.png'/> in it.
this is <img data-test=\">\" src=\"test.gif\"/> something with an <img src=\"test.png\"/> in it.