This is a very simple replacement for Simple URL flipper https://addons.vaultpit.io/fr/firefox/addon/advanced-sequenced-url-flipper/ for previous page. Useful if you want to browse forums, threads, images, pages with a version number or anything with a number. If you have a page like this http://www.site.com/page/3, hitting the button will go to http://www.site.com/page/2. Works also with http://www.site.com/page/cam002.jpg or https://www.foundation.org/en-US/browsername/56.0.1/releasenotes/. Dead url (holes in numbering) are bypassed. If only http://www.site.com/page/cam002.jpg and http://www.site.com/page/cam005.jpg exist, trying to go previous page from http://www.site.com/page/cam005.jpg will go to http://www.site.com/page/cam002.jpg. Skipping dead url will go no more page than the "hole limit". This is a one button version of this addon : https://addons.vaultpit.io/en-US/firefox/addon/nextprev-page/. Required permissions : - activeTab : to change current url - storage : to store the options - <all_urls> : to test url for bypassing dead ones.

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