Refreshing Firefox New Tab Icons

2016-11-08 14:32 - General

I like the Firefox "New Tab" page. But sometimes it picks stale thumbnails (like, the login page and not the real page) and keeps them around forever. If you open up Scratchpad and set the Browser execution environment, focus a tab on the page whose icon is stale, and run:

Cu.import("resource://gre/modules/PageThumbs.jsm"); 
PageThumbs.captureAndStore(gBrowser, function() {});

It will refresh the thumbnail for that page based on the current browser's viewport. At least sometimes.

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