How to exclude images from regex email extraction - regex

Question

I am using some email extractor software to (surprise surprise) extract emails from websites. It uses the regex:
[A-Z0-9._%+-]+#[A-Z0-9.-]{3,65}\.[A-Z]{2,4}
But this churns out images as well as emails eg _212000482_1#80xauto.jpg
I can change this regex, but I cannot figure out how to exclude matches ending in .png, .jpg etc.
There is a lot of information on validating emails - and how hard this is - but all I want to do is exclude images from the result list.

Answer 1

Description
In your sample text the undesired substring resembles an email address, but conveniently ends in jpg. So with a negative lookahead we can just exclude the filename extensions.
(?!\S*\.(?:jpg|png|gif|bmp)(?:[\s\n\r]|$))[A-Z0-9._%+-]+#[A-Z0-9.-]{3,65}\.[A-Z]{2,4}
Example
Live Demo
https://regex101.com/r/mU7bO3/2
Sample text
droids#gmail.com _212000482_1#80xauto.jpg More.Droids#deathstar.com
Sample Matches
droids#gmail.com
More.Droids#deathstar.com
Explanation
NODE EXPLANATION
----------------------------------------------------------------------
(?! look ahead to see if there is not:
----------------------------------------------------------------------
\S* non-whitespace (all but \n, \r, \t, \f,
and " ") (0 or more times (matching the
most amount possible))
----------------------------------------------------------------------
\. '.'
----------------------------------------------------------------------
(?: group, but do not capture:
----------------------------------------------------------------------
jpg 'jpg'
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
png 'png'
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
gif 'gif'
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
bmp 'bmp'
----------------------------------------------------------------------
) end of grouping
----------------------------------------------------------------------
(?: group, but do not capture:
----------------------------------------------------------------------
[\s\n\r] any character of: whitespace (\n, \r,
\t, \f, and " "), '\n' (newline), '\r'
(carriage return)
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
$ before an optional \n, and the end of
a "line"
----------------------------------------------------------------------
) end of grouping
----------------------------------------------------------------------
) end of look-ahead
----------------------------------------------------------------------
[A-Z0-9._%+-]+ any character of: 'A' to 'Z', '0' to '9',
'.', '_', '%', '+', '-' (1 or more times
(matching the most amount possible))
----------------------------------------------------------------------
# '#'
----------------------------------------------------------------------
[A-Z0-9.-]{3,65} any character of: 'A' to 'Z', '0' to '9',
'.', '-' (between 3 and 65 times (matching
the most amount possible))
----------------------------------------------------------------------
\. '.'
----------------------------------------------------------------------
[A-Z]{2,4} any character of: 'A' to 'Z' (between 2
and 4 times (matching the most amount
possible))
----------------------------------------------------------------------