screenshotFont Fingerprint Defender  |  Download Defending against font fingerprinting by reporting a fake value.

Some of the important features of the Font Fingerprint Defender addon are listed below. This is followed by an overview of this addon. This summary contains few words about the addon, its function, and its features. Next is FAQ, this section is useful to get information about how this addon works in your browser. If you couldn’t find a specific answer, please fill the bug report form on this page or the contact form on the homepage to let us know about your question. Following the FAQ, is the bug report form. It is designed to collect user feedbacks and bugs about this addon. Users can suggest improvements or feature requests through this form too. The next section is for submitting comments about this addon which uses the Facebook comments plugin. The last section is dedicated to reports submitted through the GitHub website. We hope the information provided on this page, could help you get all the basics you need about this addon and enable you to have a better experience with Font Fingerprint Defender.

In short, Font Fingerprint Defender let you easily hide your real font fingerprint by reporting a fake value while you browse. Please check the YouTube tutorial below to get an idea of how this addon works in your browser. If you want to contribute to the developement of this addon, please fork it on GitHub, and push your changes to a named branch. Moreover, you can review all the comments made on GitHub commits.

4 Reasons to Use Font Fingerprint Defender

  • Protects you against font fingerprinting.

  • Instead of blocking the fingerprint, it simply reports a random fake value.

  • Renews the reported fingerprint every time you reload a page.

  • Available for all browsers and platforms (Window, Linux, and Mac).

Matched Content

Frequently Asked Questions

  • 1. What is Font Fingerprint Defender?

    Font Fingerprint Defender is a multi-browser addon that let you easily hide your real font fingerprint by reporting a random fake value. According to many tech blogs, completely blocking the fingerprint is not a good idea, therefore reporting a fake value could be the best solution to better protect your privacy. This addon simply adds a small noise to the actual fingerprint and renews it every time you visit a website or reload a page. It is important to note that, this addon does not have any settings or options to adjust. Simply add it to your browser and start surfacing the internet.

  • 2. What is Font Fingerprinting?

    Font fingerprinting is a digital fingerprinting technique for tracking users and also allows websites to easily identify visitors using Font property in CSS. In principle, font fingerprint can be generated by extracting some metrics form a sample rendered string with various font families. Each browser and platform has its unique font fingerprint and therefore this value can potentially be used to track users. In order to get more info about font fingerprinting please read this page.

  • 3. How can I download the source code for Font Fingerprint Defender?

    To download the source code for this extension from Chrome Web Store, it is recommended to use Extension Source Downloader. With this addon, you can download the source code as a ZIP or CRX format to your machine. If you want to download the source code from the Firefox addons store, please open the firefox download link (if available) in the Firefox browser and then right-click on the - Add to Firefox - button and select - Save Link As... - item. Choose the destination folder on your machine and then save the file in XPI format. You can then rename the XPI format to a RAR or ZIP file. Some extensions may have a GitHub repo address, which you can use to download the source code as well. But, it may not be the latest version of the addon. Therefore, downloading the source code from the official web stores is the best option as it always gives you the latest version of the addon.

  • 4. How can I work with this addon?

    As mentioned above, simply add this addon to your browser and start surfing the net. Your fingerprint will always be a random value and every time a page is reloaded, a new fake value will also be generated. To test this addon, please visit a website that shows your fingerprint (i.e. webbrowsertools). Once you see your fingerprint, please reload the page and you will see a new random value. While this addon is active, you are protected against font fingerprinting.

  • 5. How does Font Fingerprint Defender work?

    This addon has a very simple logic. If a website wants to generate a fingerprint with CSS font property for your machine, this addon interferes and adds a small random noise to the actual fingerprint. This way, no one can know your real fingerprint while you are browsing the internet and every visit a fake random fingerprint is reported. Please note that this addon only protects you against font fingerprinting and NOT other kinds of digital fingerprinting techniques.

  • 6. How can I disable this addon?

    To disable this addon, please visit extensions page in your browser and click on the disable button. Please note that this addon does not any toolbar button or options page.

  • 7. Does this addon has any options or settings to adjust?

    No, as mentioned above this addon does not need any adjustments. Simply add it to your browser and start using it.

  • 8. Is this addon available for mobile browsers?

    Yes, this addon is available for both desktop and mobile machines in all operating systems (Windows, Linux, and Mac).

  • 9. Are there any other kinds of fingerprints other than font?

    Yes, there are many other types of digital fingerprints that can generated as you browser internet. For example, AudioContext, WebGL or Canvas fingerprints. This addon only protects you against Font Fingerprinting. Please browse this website to find other addons that can protect your privacy.

  • 10. Where can I find the privacy policy for Font Fingerprint Defender?

    Please read the privacy policy for this extension here.


Submitting Bugs

Your feedback goes a long way towards making this addon even better. With this bug report form, you can submit bugs or suggest enhancements for the functionality or performance of this addon. Please note, this bug report form will be sent to the developer(s) of this addon. You will not get an immediate or personal response at the moment. However, the developer(s) may contact you through the email address provided in this form for further clarifications or requesting additional information regarding the reported bug(s).

Please enter the name of the extension (addon).

Please enter the current version of the extension.

Please be as specific as possible. Basically, describe what happened, what you were doing when it happened, and why you think it is a problem.

Describe the step-by-step process required to reproduce the issue you are reporting. Be specific when describing these steps by providing as much detail as possible.

Please try to leave a link to a screenshot for the specific bug or error report.

Please enter your operating system.

Please enter your browser and its current vesrion.

Please enter your email address.

Reviews | Discussions

Please note: keep these reviews/discussions clean, and avoid the usage of derogatory or inappropriate language or terminology in references to individuals or groups based on race, national or ethnic origin, color, religion, age, gender, etc. Do not submit bugs in your reviews, use the above bug-report section instead. Also, never post any personal information in these reviews.