wpsnoop: fix Thumbnail Viewer plugin conflicts, errors & issues

When the plugin Thumbnail Viewer conflicts or throws a PHP error we hope wpsnoop can help you to fix the issue quickly.


Discover which shortcodes wp-options PHP functions database tables and files are created by Thumbnail Viewer, plus learn which plugins and/or themes could be in conflict with Thumbnail Viewer.


Troubleshooting theme and plugin conflicts is easier when you know what Thumbnail Viewer leaves behind after uninstalling it from a WordPress installation, there is a list down below for your convenience.

Expert advice is recommended if you are not technically proficient with PHP, MySQL etc. View support options for Thumbnail Viewer

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What does Thumbnail Viewer version 1.2 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for Thumbnail Viewer to perform differently in your installation, previous versions before 1.2 may have created a different set of shortcodes, used different function names or could have created entirely different database tables to store settings and operate. This is not an exhaustive list but shows how version 1.2 of Thumbnail Viewer behaves when installed and removed on a clean installation of WordPress.

We have not tested individual shortcodes, features or settings of this plugin but instead have concentrated on the potential for obvious errors and conflicts which can occur, if you need help with the plugin in your local installation you can get WordPress help and support for Thumbnail Viewer by clicking here.

Our testing covered the free version of this plugin there may or may not be a paid version or premium version available for purchase that unlocks additional features and could behave in a slightly or very different manner.

Which new files does Thumbnail Viewer add to WordPress?

This section will populate with a table showing an icon, size and filepath.

Type & Path Size Conflicts
wp-content/plugins/thumbnail-viewer/ 162.94kB No known conflicts with other themes or plugins.
wp-content/plugins/thumbnail-viewer/css/ 749.00B No known conflicts with other themes or plugins.
wp-content/plugins/thumbnail-viewer/css/thumbnailviewer.css 749.00B No known conflicts with other themes or plugins.
wp-content/plugins/thumbnail-viewer/images/ 1.51kB No known conflicts with other themes or plugins.
wp-content/plugins/thumbnail-viewer/images/loadingImage.gif 1.51kB No known conflicts with other themes or plugins.
wp-content/plugins/thumbnail-viewer/js/ 7.70kB No known conflicts with other themes or plugins.
wp-content/plugins/thumbnail-viewer/js/thumbnailviewer.js 7.70kB No known conflicts with other themes or plugins.
wp-content/plugins/thumbnail-viewer/README.txt 2.21kB No known conflicts with other themes or plugins.
wp-content/plugins/thumbnail-viewer/screenshot-1.jpg 81.03kB No known conflicts with other themes or plugins.
wp-content/plugins/thumbnail-viewer/screenshot-2.jpg 66.25kB No known conflicts with other themes or plugins.
wp-content/plugins/thumbnail-viewer/wp-thumbnailviewer.php 3.51kB No known conflicts with other themes or plugins.

Which new shortcodes does Thumbnail Viewer add to WordPress?

Which new database tables are created by the WordPress plugin Thumbnail Viewer?

Which new options are added to the wp-options table by Thumbnail Viewer?

What new PHP functions does Thumbnail Viewer declare when it is active?

Using Thumbnail Viewer from the command line with WP-CLI

The following commands are provided for convenience and should only be used if you understand how WP-CLI works. These commands refer to a single WordPress instance and may need to be modified if you are working with a Multisite installation.


How to install Thumbnail Viewer from the command line with WP-CLI

Navigate to the root of your WordPress installation and type the following command:

wp plugin install thumbnail-viewer


How to activate Thumbnail Viewer from the command line with WP-CLI

To immediately activate Thumbnail Viewer after WP-CLI downloads the latest version you can use the following command:

wp plugin install thumbnail-viewer --activate


How to reinstall Thumbnail Viewer from the command line with WP-CLI

To force a reinstallation of Thumbnail Viewer which overwrites the current plugin without asking for confirmation you can use the following command:

wp plugin install thumbnail-viewer --force


How to update Thumbnail Viewer to the latest version from the command line with WP-CLI

wp plugin update thumbnail-viewer


How to delete Thumbnail Viewer from the command line with WP-CLI

wp plugin delete thumbnail-viewer

Where can you download earlier versions of Thumbnail Viewer?

Whenever possible you should use the latest version of plugins and themes, however if you have recently updated and discovered that you need to install an earlier version you may be able to download other versions of Thumbnail Viewer from the WordPress repository by visiting this link.

Please note that installing earlier versions of a theme or plugin is not generally a recommended course of action for most users and could re-introduce security, stability or other issues in Thumbnail Viewer

About our testing enviroment

Tests were conducted using Apache 2.4.29, PHP 7.2 on Ubuntu 18.04, MySQL 5.7.33 and WordPress 5.9

It is very possible that different versions of PHP such as PHP 8.0, PHP 7.4, or PHP 7.3 could behave differently with Thumbnail Viewer. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.