Odd Thumbnail Problem with mla_gallery Shortcode

Thanks for your report and thanks as well for including the links to both versions of the page; very helpful.

In preview mode the IMG tag SRC attribute has the file name, as expected:

<dl class="gallery-item ">
<dt class="gallery-icon ">
<a href="https://www.aba.org/themencode-pdf-viewer/?file=https://www.aba.org/wp-content/uploads/2018/02/ABA-birding.pdf#zoom=page-fit"><img aria-describedby="mla_gallery-1-2053" width="1024" height="1372" src="https://www.aba.org/wp-content/uploads/2018/02/Birding-10-2017.jpg" class="attachment-full size-full" alt=""></a>
</dt>
<dd class="wp-caption-text gallery-caption" id="mla_gallery-1-2053">
<a href="https://www.aba.org/themencode-pdf-viewer/?file=https://www.aba.org/wp-content/uploads/2018/02/ABA-birding.pdf#zoom=page-fit" target="_blank">Birding October 2017</a>
</dd></dl>

The version returned by the site’s front end has a different value for the SRC atttribute:

<dl class="gallery-item ">
<dt class="gallery-icon ">
<a href="https://www.aba.org/themencode-pdf-viewer/?file=https://www.aba.org/wp-content/uploads/2018/02/ABA-birding.pdf#zoom=page-fit"><img aria-describedby="mla_gallery-1-2053" width="1024" height="1372" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="attachment-full size-full" alt=""></a>
</dt>
<dd class="wp-caption-text gallery-caption" id="mla_gallery-1-2053">
<a href="https://www.aba.org/themencode-pdf-viewer/?file=https://www.aba.org/wp-content/uploads/2018/02/ABA-birding.pdf#zoom=page-fit" target="_blank">Birding October 2017</a>
</dd></dl>

Some function of your theme or another plugin is altering the SRC attribute and not matching the value to the proper image file. I do not believe MLA has any role in this issue.

I will leave this topic unresolved for now in case you can provide more details of any MLA involvement. I regret that I cannot give you more specific or useful help at this point. Thanks for your understanding and your interest in the plugin.

Hi David, thank you for the reply. As a way of testing things, I took the same short code and just changed the file type, then assigned one of the images the same attachment category:

[mla_gallery size=full columns=4 attachment_category=birding-archive post_mime_type=image/jpeg post_parent=all link=file]
mla_caption=’{+title+}‘
[/mla_gallery]

That is working as expected on the site’s front end:

https://www.aba.org/test-bunny-single-post/

… not sure what to make of that.

Thanks for your update. With the change in file type the content of the link and IMG tags has changed singificantly:

<dl class="gallery-item ">
<dt class="gallery-icon portrait">
<a href="https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1.jpg"><img aria-describedby="mla_gallery-1-47532" width="1024" height="1247" src="https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1.jpg" class="attachment-full size-full" alt="" srcset="https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-200x244.jpg 200w, https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-246x300.jpg 246w, https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-400x487.jpg 400w, https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-500x609.jpg 500w, https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-600x731.jpg 600w, https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-700x852.jpg 700w, https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-723x880.jpg 723w, https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-768x935.jpg 768w, https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-800x974.jpg 800w, https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1.jpg 1024w" sizes="(max-width: 1024px) 100vw, 1024px" data-attachment-id="47532" data-permalink="https://www.aba.org/?attachment_id=47532" data-orig-file="https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1.jpg" data-orig-size="1024,1247" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="birding-cover_v1_no1" data-image-description="" data-image-caption="" data-medium-file="https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-246x300.jpg" data-large-file="https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1-723x880.jpg"></a>
</dt>
<dd class="wp-caption-text gallery-caption" id="mla_gallery-1-47532">
<a href="https://www.aba.org/wp-content/uploads/2022/01/birding-cover_v1_no1.jpg" target="_blank">birding-cover_v1_no1</a>
</dd></dl>

Note that the link in the earlier PDF case goes to a “pdf-viewer”. Perhaps the theme has special features for PDF viewing that alters the link and the IMG tag?

David, thanks again. It seems that the PDF viewer we use — which intercepts links that go directly to PDF files and forces them into the viewer is replacing the MLA gallery links completely.

I think you can mark this as resolved, and I need to figure out another way to create our archive galleries. Thank you *very* much for your time and effort.