Regular Expressions 101

Explanation
Pro

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 1(b|color|i|size)

1st Alternativeb

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

2nd Alternativecolor

colorthe literal text color (case sensitive)

3rd Alternativei

ithe literal i (105₁₀ / 151₈ / 69₁₆) (case sensitive)

4th Alternativesize

sizethe literal text size (case sensitive)

Group 2(=.*?)?

?repeats the group contents below at most once:

=the literal = (61₁₀ / 75₈ / 3D₁₆)

.*?any character (except for line terminators), repeated any number of times

>the literal > (62₁₀ / 76₈ / 3E₁₆)

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.

25 tokens

<\/?(b|color|i|size)(=.*?)?>

New

<color=#he>x>>
<color=red>>>>
<b>
<i>
</b>
</i>
</color>
<size=13>

<color=#he>x>>
<color=red>>>>
<b>
<i>
</b>
</i>
</color>
<size=13>