Regular Expressions 101

<tablethe literal text <table (case sensitive)

Group 1(.(?!</table>))*

*repeats the group contents below any number of times:

.any character (except for line terminators)

Negative Lookahead(?!</table>)

</table>the literal text </table> (case sensitive)

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.

Search reference

Regular Expression

<table(.(?!</table>))*

New

Remove this tag: <img src="path/to/image">. 
Also remove this tag: <img src="path/to/second/image">. 
But don't touch this <img src="cid:1259asdhasi">.
<table>fgf</table>

Regular Expression

Substitution