Status Watch - Firefox Addon - On complex websites with many assets missing files (or URLs with errors) can go unnoticed easily. This is a simple jetpack that watches HTTP traffic for any responses with 4xx or 5xx response codes and shows a brief notification to warn the user.
To use the whitelist, add a string named "extensions.statuswatch.whitelist" to about:config. To be as flexible as possible, the string is simply a regular expression pattern - if the hostname on the current page matches, the add-on is active for that page and all its assets.
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If you got an error while installing Themes, Software or Games, please, read FAQ.
Supported operating systems:
Google Android 2.0, Google Android 2.1, Google Android 2.2, Google Android 2.3, Google Android 3.0, Google Android 3.1, Google Android 3.2, Google Android 4.0, Google Android 4.1, Google Android 4.2, Google Android 4.3, Google Android 4.4, Google Android 5.x, Google Android 6.x, Nokia Internet Tablet OS Maemo 5.0
Certificate Patrol - Firefox Addon Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change