Firefox Add-ons

9Versions

0Code reviewed

Not reviewed

No code review on record

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27 indicators in this extension

27 indicators

0 versions analysed

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What our analysis found

Full Screen for Firefox, used by 5,162 people, is not yet reviewed by Extension Auditor. Its permissions mean it can read and change data on all websites and can inject scripts into pages. It comes from a publisher with 66 extensions and was last updated in May 2026.

Full Screen for Firefox Firefox extension security report

ID: full-screen-for-firefox

Extension Info & Metadata

Status

Active

Version

1.8.10

Size

0.67 MB

Rating

4.4/5

Reviews

147

Users

5,162

Type

Extension

Updated

May 27, 2026

Publisher Contextual Analysis

Author: Stefan vd
Privacy: Privacy Policy
Website: Visit

Extensions

Active

Obsolete

Listed

Unlisted

Users

965,319

Screenshots & videos

Install growth

User Growth

No data available

No user growth data available for this extension

Rating Count

No data available

No rating count data available for this extension

Average Rating

No data available

No rating data available for this extension

See plans

React Flow

Internal permhash`82d72d85bc…`
10 malicious

145 other extensions carry this fingerprint; 10 of the cluster are known malicious.

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+138 more

Permhash (Mandiant)`3322cfd57d…`
No malicious matches

22 other extensions carry this fingerprint, none of them known malicious.

Withheldnot flagged
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+15 more

Network indicators

27 URLs and 0 IP literals were extracted from this version.

Item	Type	Severity	Description
scripting	Permission	Critical	This permission allows injection and execution of JavaScript on any webpage. Rated Critical because it can modify page content, steal sensitive data, and inject malicious code into any site the extension has access to.
<all_urls>	Host	Critical	Broad host access — the extension can read/modify content on every website.
:///*	Risk Factor	Critical	This permission grants access to all websites without restriction. Rated High because it can access any web content, monitor all web activity, and potentially steal sensitive data across all sites.
Broad Host Permissions	Risk Factor	High	This extension has broad host permissions allowing it to access many or all websites.
Broad Content Script Access	Risk Factor	High	This extension can inject scripts into any website.
tabs	Permission	Medium	This permission enables tab management and monitoring. Rated Medium because it can track open tabs, access tab metadata, and monitor user browsing patterns.
storage	Permission	Medium	This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
contextMenus	Permission	Low	This permission adds items to browser context menus. Rated Medium because it only modifies right-click menus without access to page content.

27 indicators in this extension

27 indicators

0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99 Start 7-day trial — all reports

One-time payment · Secure checkout by Stripe

About this extension

Go full screen with one click on the full screen button. That includes also the full screen movies such as the YouTube, Vimeo, Dailymotion, Youku video player, etc.

User reviews

3.1 out of 5 · 10 most recent reviews

Text reviews

Positive

Negative

Media Full Screen does not work for auto play. This is not enough for my setup. And I don't know how long this will be updated.

zekromVale·31 Oct 2025

Only using it to auto full screen Youtube videos when pressing play. I am however having a re-occuring bug where it from time to time won't un-full screen whenpausing/video ending. So I have to reload the page with F5.

gunnar90·8 Oct 2025

Does not work unfortunately. I am not sure where the fault is but on a Google search this extensions comes up as a "Full screen" extension for Firefox Android. Yet the app appears to be for the PC version of Firefox. There is no way to use it on Android.

Extension files

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URLs

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No URLs found

No IP addresses found

27 indicators in this extension

27 indicators

0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99 Start 7-day trial — all reports

One-time payment · Secure checkout by Stripe

Version	Size	Verdict	Findings	Permhash
1.6.1.0 Latest	0.53 MB	Not scanned	—	7fe17a4c16648326483d9506f2b4cbee2a44a43e53258c43d27a8a5957261070
1.8.0.0	0.66 MB	Not scanned	—	3322cfd57d6da6d199883867185b1e5d700696c6064e4907ec5f487e68208392
1.8.2	0.66 MB	Not scanned	—	3322cfd57d6da6d199883867185b1e5d700696c6064e4907ec5f487e68208392
1.8.3	0.66 MB	Not scanned	—	3322cfd57d6da6d199883867185b1e5d700696c6064e4907ec5f487e68208392
1.8.4	0.66 MB	Not scanned	—	3322cfd57d6da6d199883867185b1e5d700696c6064e4907ec5f487e68208392
1.8.5	0.66 MB	Not scanned	—	3322cfd57d6da6d199883867185b1e5d700696c6064e4907ec5f487e68208392
1.8.8	0.67 MB	Not scanned	—	3322cfd57d6da6d199883867185b1e5d700696c6064e4907ec5f487e68208392
1.8.9	0.67 MB	Not scanned	—	3322cfd57d6da6d199883867185b1e5d700696c6064e4907ec5f487e68208392
1.8.10	0.67 MB	Not scanned	—	3322cfd57d6da6d199883867185b1e5d700696c6064e4907ec5f487e68208392

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Code Diff

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Not reviewed

27 indicators in this extension

What our analysis found