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My ISP is charging me per GB for download. I need some solution to save Web pages on firefox and when I open page again, FF load it from cache offline.

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Per GB on the GB? – AthomSfere Aug 25 '13 at 17:32
Disable automatic image downloading. – Breakthrough Aug 26 '13 at 13:37
up vote 2 down vote accepted

Squid proxy. Set that up on a computer and configure firefox to use it. It will cache as much as you allow it based on hard drive usage.

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is there exist any good addons – Wasim Aug 25 '13 at 16:45
@Wasim addons for what specifically? – cybernard Aug 25 '13 at 16:47
that can cache contents and load content offline, specially images – Wasim Aug 25 '13 at 16:49
@Wasim It should cache everything even downloads and images. From the website "Squid is a fully-featured HTTP/1.0 proxy which is almost (but not quite - we're getting there!) a fully-featured HTTP/1.1 proxy." – cybernard Aug 25 '13 at 16:55
it was harder to configure, took my 2 hours. I suggest not to change the default directory to c:\squid. it will take your time. and you can not use path with space like d:\program file\squid. it will not accept space – Wasim Sep 7 '13 at 7:36

Besides having static files cached, here are a few things you can do to conserve bandwidth:

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