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when i press Ctrl and +, the browser window zooms in, right? but when i press Back eg. it gets back to its previous zoom stage, its not keeping the zoom in option i choosed. What is this have to do with? antivirus options maybe? thanx

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By pressing Ctrl and + we have a zoom in on the browser page open. A nice feature for people with bad sight and/ or working a lot in front of a pc. The problem appears when i'll press Back button on that page, and automatically turns to the previous zoom levels, so i have to zoom in again (and again...) each time i move across the page 9eg. on facebook). I recently had a format on my pc (Windows XP) and use a trial of Karspersky antivirus. Before the format, it was working fine, keeping zooming in permanently.

By pressing Ctrl and + we have a zoom in on the browser page open. A nice feature for people with bad sight and/ or working a lot in front of a pc. The problem appears when i'll press Back button on that page, and automatically turns to the previous zoom levels, so i have to zoom in again (and again...) each time i move across the page 9eg. on facebook). I recently had a format on my pc (Windows XP) and use a trial of Karspersky antivirus. Before the format, it was working fine, keeping zooming in permanently.

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The Firefox Page Zoom feature does a domain by domain level of saving the users preferred zoom level settings, there is no default Page Zoom level setting in Firefox.

Try the Default FullZoom Level extension:
https://addons.mozilla.org/en-US/firefox/addon/6965

Or the NoSquint extension:
https://addons.mozilla.org/en-US/firefox/addon/2592/