This is exactly what Custom Product Image Titles mod does. Custom title is shown as a tooltip on a product thumbnail and as a caption for the enlarged image.
Furthermore, you can custom sort the additional product images, which is not possible in default OpenCart installation.
And best of all, it has multilanguage support which gives you the opportunity to have localized image titles and alt messages.
You can get it from http://www.opencart.com/index.php?route ... on_id=1243
The version 1.0 of the mod is available for OpenCart versions from 1.4.7 to 1.4.8b,
version 2.1 is available for OpenCart 1.4.9.x and 1.5.x
and version 2.1.1 is available for OpenCart 188.8.131.52-184.108.40.206.
Also available as a vQmod for OpenCart 1.5.1.x-1.5.3.x with version 2.4.0.
- custom product image titles
- custom category image titles [added in v2.4]
- custom image alt text [concealable starting from v2.2]
- image sort order
- multilanguage support [added in v2.0]
- selectable tabbed or untabbed display of multilanguge edit fields [added in v2.2]
- display image captions below images [added in v2.1] (in OC 1.5.x only main image caption is displayed)
- option to take content from the admin language fields for secondary languages when left empty [added in v2.3]
- custom main product image title and alt messages appear also on category and search pages [added in v2.4]
Additional images with sorting STORE
Main product image title as a tooltip Main product image caption
- edit 23.05.2012 - released version 2.4.0 for OpenCart 1.5.1.x, 1.5.2.x (vQmod) - adds custom titles & alts to caegory images and displays custom product titles on category and search pages.
- edit 22.04.2012 - released version 2.3.1 for OpenCart 1.5.1.x (vQmod) - fixes database text field collation to utf8
- edit 15.03.2012 - released version 2.3.0 for OpenCart 1.5.1.x (vQmod) - fixes default values when adding a new language and option to use admin language values for other languages
- edit 04.02.2012 - released version 2.2.0 for OpenCart 1.5.1.x (vQmod) - added option to hide alternative text field and option to choose tabbed or untabbed display of multilanguage edit fields
- edit 17.11.2011 - released version 2.1.2 for OpenCart 1.5.1.x (vQmod) and 1.4.9.x (vQmod) - fixes compatibility with Custom Product Tab (vQmod) mod
- edit 30.09.2011 - added support for OpenCart version 220.127.116.11
- edit 16.09.2011 - fixed some error messages, added vQmod for OpenCart versions 18.104.22.168-22.214.171.124
- edit 24.07.2011 - added support for OpenCart versions 126.96.36.199 and 188.8.131.52
- edit 18.07.2011 - added support for OpenCart version 1.5.1
- edit 30.05.2011 - added support for OpenCart version 1.5.0
- edit 11.05.2011 - added support for OpenCart version 184.108.40.206
- edit 13.04.2011 - Version 2.1 (added support for image captions)
- edit 20.03.2011 - added support for OpenCart version 220.127.116.11