Tampering with Firefox can be a great way to take control of your browsing experience and tailor the browser to your specific needs. By following the methods outlined in this guide, you can modify Firefox to enhance its performance, security, and appearance.
: Use extensions like FoxyProxy to quickly switch between your normal connection and your intercepting proxy. tamper firefox
As one of the most popular web browsers, Firefox offers a wide range of features and customization options. However, sometimes you might want to push the boundaries of what's possible. That's where tampering with Firefox comes in. In this post, we'll explore what it means to tamper with Firefox, why you might want to do it, and provide a step-by-step guide on how to modify your browser to suit your needs. Tampering with Firefox can be a great way
For the average user, stick to standard Firefox + uBlock Origin. But if you want to disappear in the crowd, learn about:config , maintain your own user.js , and accept that some websites will ask "Are you a robot?" a little more often. As one of the most popular web browsers,
Last updated: 2026-04-14. Firefox version 130+.
| Preference | Set to | What it does | |------------|--------|---------------| | privacy.trackingprotection.fingerprinting.enabled | true | Blocks canvas & audio fingerprinting scripts. | | privacy.trackingprotection.cryptomining.enabled | true | Blocks cryptocurrency mining scripts. | | privacy.resistFingerprinting | true | Rounds your system clock, spoofs timezone to UTC, and limits screen resolution reporting. (May break some video players.) | | webgl.disabled | true | Disables WebGL—a major fingerprinting vector. | | media.navigator.enabled | false | Prevents sites from detecting your microphones/cameras without permission. |
| Preference | Set to | What it does | |------------|--------|---------------| | extensions.pocket.enabled | false | Removes Pocket integration entirely. | | browser.newtabpage.activity-stream.section.highlights.includePocket | false | Removes Pocket stories from new tab. | | browser.shell.checkDefaultBrowser | false | Stops nagging about default browser. |