Regular Expressions 101

(?is)applies the following effective flags to the remainder of the pattern: gis

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

s modifier: single line. Allows a dot to match line terminators

<imgthe literal text <img (case insensitive)

Atomic Group(?>[^>]* alt="([^"]+)")?

?repeats the group contents below at most once:

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

alt="the literal text alt=" (case insensitive)

Group 1([^"]+)

Negated Character Class[^"]+

+matches at least one character outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?is)<img(?>[^>]* alt="([^"]+)")?[^>]*>

New

Schau mal: <img src="./dir/file.png" id="f" alt="flying dogs">
Magst Du <img src="./dir/file2.jpg" class="favorites" title="Schoki bis zum Abwinken" />?

Regular Expression

Extraction