Pale Moon 25.6 ships with anti-fingerprinting option

Martin Brinkmann
Jul 28, 2015
Updated • Jun 26, 2017
Internet, Pale Moon

We talked about a fingerprinting technique using Canvas before and explained how companies make use of the feature supported by all modern web browsers to track users across the Internet.

We also told you how to block Canvas fingerprinting in Firefox and Chrome.

The most recent update of Pale Moon, a Firefox spin-off, introduces a native option in the browser that should make it a lot harder for others to use Canvas to fingerprint the browser.

Tip: If you want to check if a fingerprint may be created of your browser to track you online, check out this online test.

The new Poison Data option is not enabled by default in Pale Moon due to its impact on performance when Canvas is being used in the browser.

pale moon 25.6.0

Pale Moon users can enable it in the following way:

  1. Type about:config in the browser's address bar and hit enter.
  2. Search for canvas.poisondata
  3. A double-click on the preference toggles its state.

To undo the change at any point in time, repeat the process described above.

So how do you know it is working? Simple, you visit the test page linked above and reload it a couple of times. You should get a new signature with every reload after you enable the Poison Data option in Pale Moon while the signature should not change at all without the preference (provided you don't use other defensive measures to protect your browser).

Anti-fingerprinting is definitely the core new feature of Pale Moon 25.6.0 but it is not the only one. Firefox users may recognize some of the features as Mozilla implemented them in Firefox in the past.

Here is a short rundown of the most important feature additions and changes in Pale Moon 25.6.0:

  1. Icon fonts are now loaded by default even if font loading is disabled. The feature will land in Firefox 41. The preference gfx.downloadable_fonts.enabled defines whether Firefox will download icon fonts automatically or not.
  2. The parameter autocomplete="off" is ignored by Pale Moon so that authentication information can be saved regardless of website preference. Users who want to disable the feature need to set signon.ignoreAutocomplete to false. A similar feature landed in Firefox 29.
  3. Screensavers are blocked automatically by Pale Moon if HTML5 video is played in fullscreen mode.
  4. CSP "nonce" keywords are now supported.
  5. Chrome://../skin/ overrides are supported now allowing users to customize browser icons.
  6. Several security fixes.

Details are provided by the official release notes. Existing users may use the browser's automatic update feature to update to Pale Moon 25.6.0 while new users find downloads for their operating system at the official project website.

Pale Moon 25.6 ships with anti-fingerprinting option
Article Name
Pale Moon 25.6 ships with anti-fingerprinting option
Pale Moon 25.6.0, an update to the web browser that shares code with Firefox, ships with Canvas anti-fingerprinting and other new features.
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  1. ilev said on August 4, 2012 at 7:53 pm

    Doesn’t Windows 8 know that www. or http:// are passe ?

    1. Martin Brinkmann said on August 4, 2012 at 7:57 pm

      Well it is a bit difficulty to distinguish between domains and files for instance.

    2. Leonidas Burton said on September 4, 2023 at 4:51 am

      I know a service made by google that is similar to Google bookmarks.

  2. VioletMoon said on August 16, 2023 at 5:26 pm

    @Ashwin–Thankful you delighted my comment; who knows how many “gamers” would have disagreed!

  3. Karl said on August 17, 2023 at 10:36 pm


    The comments section under this very article (3 comments) is identical to the comments section found under the following article:

    Not sure what the issue is, but have seen this issue under some other articles recently but did not report it back then.

  4. Anonymous said on August 25, 2023 at 11:44 am

    Omg a badge!!!
    Some tangible reward lmao.

    It sucks that redditors are going to love the fuck out of it too.

  5. Scroogled said on August 25, 2023 at 10:57 pm

    With the cloud, there is no such thing as unlimited storage or privacy. Stop relying on these tech scums. Purchase your own hardware and develop your own solutions.

    1. lollmaoeven said on August 27, 2023 at 6:24 am

      This is a certified reddit cringe moment. Hilarious how the article’s author tries to dress it up like it’s anything more than a png for doing the reddit corporation’s moderation work for free (or for bribes from companies and political groups)

  6. El Duderino said on August 25, 2023 at 11:14 pm

    Almost al unlmited services have a real limit.

    And this comment is written on the dropbox article from August 25, 2023.

  7. John G. said on August 26, 2023 at 1:29 am

    First comment > @ilev said on August 4, 2012 at 7:53 pm

    For the God’s sake, fix the comments soon please! :[

  8. Kalmly said on August 26, 2023 at 4:42 pm

    Yes. Please. Fix the comments.

  9. Kim Schmidt said on September 3, 2023 at 3:42 pm

    With Google Chrome, it’s only been 1,500 for some time now.

    Anyone who wants to force me in such a way into buying something that I can get elsewhere for free will certainly never see a single dime from my side. I don’t even know how stupid their marketing department is to impose these limits on users instead of offering a valuable product to the paying faction. But they don’t. Even if you pay, you get something that is also available for free elsewhere.

    The algorithm has also become less and less savvy in terms of e.g. English/German translations. It used to be that the bot could sort of sense what you were trying to say and put it into different colloquialisms, which was even fun because it was like, “I know what you’re trying to say here, how about…” Now it’s in parts too stupid to translate the simplest sentences correctly, and the suggestions it makes are at times as moronic as those made by Google Translations.

    If this is a deep-learning AI that learns from users’ translations and the phrases they choose most often – which, by the way, is a valuable, moneys worthwhile contribution of every free user to this project: They invest their time and texts, thereby providing the necessary data for the AI to do the thing as nicely as they brag about it in the first place – alas, the more unprofessional users discovered the translator, the worse the language of this deep-learning bot has become, the greater the aggregate of linguistically illiterate users has become, and the worse the language of this deep-learning bot has become, as it now learns the drivel of every Tom, Dick and Harry out there, which is why I now get their Mickey Mouse language as suggestions: the inane language of people who can barely spell the alphabet, it seems.

    And as a thank you for our time and effort in helping them and their AI learn, they’ve lowered the limit from what was once 5,000 to now 1,500…? A big “fuck off” from here for that! Not a brass farthing from me for this attitude and behaviour, not in a hundred years.

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