Title: More about functionality
Last modified: August 1, 2021

---

# More about functionality

 *  Resolved [norbou](https://wordpress.org/support/users/norbou/)
 * (@norbou)
 * [4 years, 10 months ago](https://wordpress.org/support/topic/more-about-functionality/)
 * Hello, I have read the whole description of the plugin, but it is not clear to
   me whether the plugin actually writes its guessed values to the database for 
   alt texts or has its own table or works in “on the fly” mode. I would like to
   be able to retroactively see which images have manual and which have automatic
   alt text and be able to revert to the original state.
    My original idea was to
   automatically add “illustration image” text for thumbnail images only. I’ve done
   all the important captions manually on the site, but I don’t have the capacity
   and motivation to do that in a photo gallery, for example. I would like to add
   that according to WCAG the alt texts on the page should not be identical, which
   I don’t know how your plugin could solve. Those WCAG criteria are really self-
   deprecating, and unless the content is important also for the visually impaired,
   it only makes sense for that SERP.
 * King regards,
    Jiri

Viewing 1 replies (of 1 total)

 *  Plugin Author [Sajjad Ali](https://wordpress.org/support/users/the-rock/)
 * (@the-rock)
 * [4 years, 10 months ago](https://wordpress.org/support/topic/more-about-functionality/#post-14725232)
 * Hello [@norbou](https://wordpress.org/support/users/norbou/)
 * Thanks for the message. Let me explain how BIALTY works.
 * 1. BIALTY works “on the fly” mode based on your settings. There is no entry in
   the database for alt texts.
 * 2. As you can see on the Settings page, there are 2 major settings. Replacing
   Missing Alts and Replace Defined Alts. So if you have several pages where you
   have set alt text manually, you can simply “disable” Bialty for Defined alt tags,
   and your manually entered data will preserve. If you have just a few pages with
   manual alt tags, you can disable Bialty locally on those pages only from Meta
   Box.
 * 3. Please note that Bialty currently supports only Posts, Pages, and Woocommerce
   Products (pro version). So if your gallery is a custom post type then it will
   not work automatically. We have a plan to include Custom Post Types (hopefully
   in the next update).
 * 4. BIALTY uses WordPress “the_content” filter to replace alt tags on the fly.
   If your images are not inside the “the_content” filter, Bialty will not replace/
   change alt tags. For example, if you’re using a third-party Gallery plugin that
   isn’t using the_content filter. In this case, you will have to check with the
   Plugin developer if it can support a custom filter. If yes, then it’s easy to
   use Bialty by adding this code line in your theme functions.php file.
 *     ```
       if ( class_exists('Bialty') ) {
           $dom = new \Pagup\Bialty\Controllers\DomController;
           add_filter('my_custom_filter', array( &$dom, 'bialty' ), 100);
       }
       ```
   
 * Replace **my_custom_filter** with your own filter and it should work fine.
 * 5. You can use “Image Name” for alt tags, which will solve your issue of not 
   being identical.
 * Hope this helps.
 * Regards

Viewing 1 replies (of 1 total)

The topic ‘More about functionality’ is closed to new replies.

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## Tags

 * [alt](https://wordpress.org/support/topic-tag/alt/)
 * [featured](https://wordpress.org/support/topic-tag/featured/)

 * 1 reply
 * 2 participants
 * Last reply from: [Sajjad Ali](https://wordpress.org/support/users/the-rock/)
 * Last activity: [4 years, 10 months ago](https://wordpress.org/support/topic/more-about-functionality/#post-14725232)
 * Status: resolved