The ReIMG Image Resizing MOD is one of the most popular MOD downloads in phpBB 3.0. It would be very desirable to include a default image resizing feature in phpBB 3.1 or 3.2.

Related RFC:
http://area51.phpbb.com/phpBB/viewtopic.php?f=108&t=33588

ReIMG:
https://github.com/DavidIQ/phpBB-ReIMG-Image-Resizer

Additional references/resources:
http://area51.phpbb.com/phpBB/viewtopic.php?f=81&t=43351&start=20#p247305
http://area51.phpbb.com/phpBB/viewtopic.php?f=81&t=43351&start=30#p247451

If we do include a default JS resizing mechanism we would need to decide on which library to use, i.e. Lightbox 2, Highslide JS, etc. and include it. As part of this change additional resizing methods can be added (easily?) through the use of extensions.

Non-JS resizing has already been handled by the responsive layout ticket:
http://tracker.phpbb.com/browse/PHPBB3-11552