CHROME NEW TAB THUMBNAILS MISSING HOW TO

The real page does use caching, but since the website URL is the 'no cache page', it seems thumbnail is not always the login page, even when the new page tab thumbnail points to my 'main' page.

To archive it, I use a 'main' page, that is the actual URL for the browser (->thumbnail), with no caching, but it just contains a frame, where my 'real' page is called internally. Use of HTTPS would to solve it, except because of the Firefox bug.ДЇirst of all, the 'application manifest' does not help.Д«ased on answer I found a way to implement it without loosing the browser cache for my 'usefull' code, and keeping URL intact. What I actually am looking for is that the site uses cache for Javascript and images, but not for thumbnails. But yes it seems there is a way to avoid it.

CHROME NEW TAB THUMBNAILS MISSING HOW TO

Unfortunately they don't tell how to do it. Note: Some websites don't allow images (-> thumbnail) to be generated and saved On Mozzila's support page they state the following: Firefox does show it even when using HTTPS. Under Chrome, use HTTPS seems to solve it since blank screen is shown as preview. I found a possible answer in Is there a W3C standard meta tag to determine the cover image used to represent a website? but it seems a still unstable method, and banking sites I investigated are not using it apparently so I suspect there is another (better?) solution.ДЄny idea? I need it working at least for Firefox. Since my website is showing confidential information, how could I avoid the browsers to take screen shots for the 'recent website' list, or at least limit it to the login page (like Facebook or banking website are doing)?

Browser like Firefox and Chrome take screen shot of the visited websites and can show them on a new tab as 'recent used website'.

Chrome new tab thumbnails missing