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Preview of Fake Fullscreen – Theater Mode

Fake Fullscreen – Theater Mode by Amo

Put any HTML5 video into a borderless theater view that fills the whole tab — and redirect native fullscreen into it. No OS-level fullscreen involved.

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About this extension
A lightweight Firefox / Zen Browser WebExtension (Manifest V3) that puts any HTML5 <video> into a "fake fullscreen" theater view covering the whole tab — with zero OS-level fullscreen, zero frameworks, and minimal permissions (storage only).
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Permissions and data

Required permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
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Version
1.4.0
Size
52.2 KB
Last updated
14 days ago (Sep 9, 2026)
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