Display image thumbnails from URL fields in Table chart

[SukiSeven]

Problem

I have a MySQL table called message_files.
One of the columns is url (type TEXT), which stores direct image links.

In Superset, when I explore this table with a Table chart, the url field is displayed as plain text.

I would like to:
1、Render this url field as a small thumbnail image inside the table cell.
2、When clicking the thumbnail, open the full image (either in a new tab or with a preview/lightbox).

[dosubot[bot]]

You can display image thumbnails from URL fields in Superset Table charts by enabling the "Render Columns in HTML Format" option. Format your URL field as an HTML <img> tag (for example, using a SQL expression like CONCAT('<img src=\"', url, '\" width=\"40\"/>')). Superset's sanitizer allows <img> tags and their src attributes, so thumbnails will render in table cells if the HTML is correct and the option is enabled [source] [source].

For click-to-preview, you can wrap the <img> tag in an <a> tag with target="_blank" to open the full image in a new tab, like:
CONCAT('<a href=\"', url, '\" target=\"_blank\"><img src=\"', url, '\" width=\"40\"/></a>')
Lightbox-style previews are not supported out of the box, since custom JavaScript is not allowed in table cells [source].

If images do not render, double-check that the "Render Columns in HTML Format" option is enabled and your HTML is valid. Some users have reported version-specific issues, so results may vary depending on your Superset version [source].

To reply, just mention @dosu.

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