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Thumbnail Zoom Plus Requires Restart
Shows full image when you hover over a thumbnail. Works with Amazon, Baidu Images, Bing Images, Facebook, Flickr, Google+, Google Images, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Twitter, Yandex, YouTube, Wikipedia, Yahoo Images, & many more.
RequestPolicy Requires Restart
Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.
Danish Dictionary for the Spell Checker
Danish dictionary for Firefox, Thunderbird and other Mozilla products.
Live HTTP Headers (clone)
View HTTP headers of a page and while browsing.
This is an unofficial "Live HTTP headers" clone, mainly to fix the Replay feature!
English - Greek Spelling dictionary
English-Greek spell-checking dictionary for Firefox, Mozilla thunderbird and Seamonkey mail for easier spell checking in bilingual text.If you need better spelling results try the respective stand-alone...
DuckDuckGo Deutsch
Die datenschutzfreundliche Suchmaschine DuckDuckGo in der Region Deutschland.
YouTube (SSL)
YouTube is the world's most popular video sharing website. This search bar extension utilizes SSL to protect searches between You and YouTube.
Complete YouTube Saver Requires Restart
Download YouTube videos in various formats including 1080p, 4K etc (DASH formats). Convert audio track from videos to MP3 or WAV, or save audio in native format (Ogg, AAC/M4A, MP3, OPUS). Save YouTube page, video, comments and subtitles to one folder
RefControl Requires Restart
Control what gets sent as the HTTP Referer on a per-site basis.
Dorando keyconfig Requires Restart
A modified Dorando's addon to rebind keyboard shortcuts. It is designed to be a drop-in replacement, keeping your old settings. (See details for upgrade instructions.)
As of version 2016.2, Custom keys (using custom JavaScript) work again!
Arabic spell-checking dictionary
Arabic spell-checking dictionary for Firefox 3 and Thunderbird 3 from Ayaspell.
To create your own collections, you must have a Mozilla Add-ons account.