MIME-Based Transformations - Mastering phpMyAdmin 3.1 for Effective MySQL Management - page 244

In this case, we can switch to Full Texts to reveal the complete link. We can then see
the complete image.
Other transformations, such as image/jpeg: inline and image/png: inline ,
specify the exact MIME type of the image. In these cases, phpMyAdmin uses GD2
library functions for the thumbnail generation. However, the link contained in a
text/plain: imagelink transformation may refer to any browser-supported
image type. Therefore, phpMyAdmin just displays a resized image with an HTML
img tag and its width and height attributes, according to the size options defined in
the transformation. To see the original image, we can click either the link or
the thumbnail.
Preserving the original formatting
Normally, when displaying text, phpMyAdmin helps you get rid of special
characters. For example, if we entered This topic is <b>good</b> in the description
field for one book, we would normally see This topic is <b>good</b> when
browsing the table. However, if we used the transformation text/plain: formatted for
this field, we would get the following while browsing:
In this example, the results are correct. However, other HTML entered in the data
field could produce surprising results (including invalid HTML pages). For example,
because phpMyAdmin presents results using HTML tables, a non-escaped </table>
tag in the data field would ruin the output.