How do I blacklist sites from appearing/being screen captured in the new tab view (Banking/Social media/Etc...)?
When I was checking out the new tab view this morning, I noticed that there were screenshots from by accounts page on my banking website. I turned off the tiled display, but they came right back when i turned it on again. the problem is 1) I don't know where these screenshots are being stored, and how detailed they are (the thumbnails are blurry, but recognizable to me) and 2) how do I blacklist a domain from being screen capped for this purpose at all? The screen capture seems to not be related to having the tiles show up in the tab, since they came right back after toggling this setting.
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these screenshots are stored in your browser's cache at the moment, but in future versions of firefox they will (together with the previews for tab panorama) be stored as plain picture files in a folder in the local applications data folder of windows & the number of screenshots will be optimized (reduced). the resolution is quite low, they are only available in the blurry format you already see.
you can remove sites by clicking the x button on the thumbnail - this will be remembered in a blacklist, however i'm not sure if this is affecting the whole domain or just the exact url (i suspect the latter).
You can temporarily switch to Private Browsing mode to prevent Firefox from storing data on your hard drive including the thumbnail on the new tab page.
- Tools > Options > Privacy, choose the setting Firefox will: Use custom settings for history
- Select: [X] "Always use private browsing mode"