On 6/17/2013 9:48 PM, Drew Willcoxon wrote:
The desktop Firefox team is building a new Toolkit module that captures 
thumbnails of off-screen web pages. Critically, we want to avoid capturing any 
data in these thumbnails that could identify the user. More generally, we're 
looking for a way to visit pages in a sandboxed manner that does not interact 
with the user's normal browsing session. Does anyone know of such a way or know 
how we might change Gecko to support something like that?

What about launching/forking a separate process to capture thumbnails for these pages? I don't mean an Electrolysis-style child process that is tightly coupled to the browser, but rather a separate program that does not use the Firefox profile at all. The browser would pass this program a URL and it would just render a page and save the thumbnail.
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