# [Solved] Arkenfox JS

**URL:** https://discuss.privacyguides.net/t/solved-arkenfox-js/20357
**Category:** General
**Tags:** browsers
**Created:** 2024-08-26T21:21:40Z
**Posts:** 4

## Post 1 by @user12 — 2024-08-26T21:21:40Z

Ankenfox released new version. I have 2 questions which I could not find an answer:

1- On new version it disabled RFP, and enabled FPP. I could not see where it enabled FPP?

2- “privacy.resistFingerprinting.letterboxing” has been disabled. So, do I need those:

> user\_pref(“privacy.window.maxInnerWidth”, 1600);  
> user\_pref(“privacy.window.maxInnerHeight”, 1200);

If yes, Do I need to change values depending on my screen?

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## Post 2 by @redoomed1 — 2024-08-26T21:58:01Z

> [@user12](#):
>
> I could not see where it enabled FPP?

> <https://github.com/arkenfox/user.js/issues/1804#issuecomment-2308732111>
>
> in the meantime read #1764 if you want - edit, I meant #1716 but the #1764 user.…js info changes is also good :)
> - I will summarize why soon (hence locking the issue for now)
> - I have also amended the title of #1334 to include RFPTargets, and I will also explain that here
> 
> don't hold your breath, not looking forward to regurgitating everything :)
> 
> ToDo
> - [x] change user.js - https://github.com/arkenfox/user.js/pull/1847/commits/10fddc8072b69cb7f3448fb4c5e09c8bc23b72f3 & https://github.com/arkenfox/user.js/pull/1847/commits/0d12cd90b4fe7e5af60e3897d788bdab76d59d17
> - [x] explain shit below
> - [x] update wiki
> - [x] make disable RFP overrides obsolete in #1080 and mentions on it in the wiki/user.js

> FF128+ has what is called FPP (finger print protection) […] it is enabled (in normal windows) when users change to ETP Strict

Arkenfox enables ETP Strict by default, so it was always enabled until RFP is enabled, which [overrides FPP](https://github.com/arkenfox/user.js/issues/1804#issuecomment-2309979139).

* * *

> [@user12](#):
>
> “privacy.resistFingerprinting.letterboxing” has been disabled. So, do I need those

You don’t need to configure any values manually… see Thorin-Oakenpants’s [suggestion](https://github.com/arkenfox/user.js/issues/1804#issuecomment-2308732111):

> Personally, I will using RFP […] FYI: my overrides (I am using en-US app language)
> 
> > ```
> > user_pref("privacy.resistFingerprinting", true);
> > user_pref("privacy.resistFingerprinting.letterboxing", true);
> > user_pref("webgl.disabled", true);
> > user_pref("privacy.spoof_english", 2);
> > ```

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## Post 3 by @user12 — 2024-08-27T05:16:18Z

Thank you

I did not see the comment above of “maxInnerWidth” config:

> RFP new window size max rounded values

That means “maxInnerWidth” is config of RFP not FPP. Am I right?

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## Post 4 by @redoomed1 — 2024-08-27T14:03:30Z

> **[arkenfox gui](https://arkenfox.github.io/gui/?s=maxInnerWidth)**