A recent Youtube Web update has added a canvas whenever the seek bar is visible, an HTML5 canvas pops up. This was not asked for and not needed. If you disable canvases for privacy, this will cause a horrific red bad to cover half the screen until you hide the seekbar. Canvases can be used for fingerprinting, which I’m sure Google is doing here.

  • @0oWow@lemmy.world
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    245 months ago

    You can keep canvas blocked on YouTube. To stop the red lines, do this:

    Click uBlock Origin icon (top right of the browser, small red shield).

    Click the gears icon (“Open the dashboard”).

    Click “My filters” tab. Make sure “Enable my custom filters” is checked.

    Add the following string to the list of filters:

    www.youtube.com##.ytp-gradient-bottom

    Click “Apply changes”.

    Reload your youtube video page.

    • 𝕸𝖔𝖘𝖘
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      75 months ago

      Wait… so the red lines are added ON PURPOSE to deliberately degrade experience, and are not a side effect of having Canvas disabled?

      • @0oWow@lemmy.world
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        45 months ago

        Maybe, I don’t know if it was on purpose. But the red lines are the red-fade-to-pink effect of the progress bar I believe, and I have not found a need for such a feature, so they might be using this feature as an excuse to claim the need of canvas.

        • 𝕸𝖔𝖘𝖘
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          25 months ago

          Sure sounds like it’s just an excuse, since it worked swimmingly before the canvas claim.

    • Binette
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      25 months ago

      Saved your comment cause I knew I would run into this issue. Thanks a bunch!

  • Chozo
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    35 months ago

    What exactly is HTML5 canvas image data?

    • @treadful@lemmy.zip
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      35 months ago

      It’s just an API that allows a web page to draw in a box. The problem is, that for a bunch of technical reasons that I’m mostly not aware of, it can be used to fingerprint you.

      • Dran
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        45 months ago

        The canvas API needs specific access to hardware that isn’t usually available via browser APIs. It’s usually harder to get specific capability information from a user’s GPU for example. The canvas API needs capability information to decide how to draw objects across differently capable hardware, and those extra data points make it that much easier to uniquely identify a user. The more data points you can collect, the more unique each visitor is.

        Here’s a good utility from the EFF to demonstrate the concept if you or anyone else is curious.

        https://coveryourtracks.eff.org/

  • Kairos
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    25 months ago

    Google uselessly uses the canvas for its reverse image search. And I do mean uselessly - The image you upload is put onto the canvas, then immediately relayed to the server and never used again.

      • Kairos
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        05 months ago

        Yes because as we all know that’s too hard for Google to achieve.

          • Kairos
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            05 months ago

            Yes because as we all know 100% of browsers have a canvas.

            • lime!
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              15 months ago

              which ones don’t?

              also, good goalpost moving.

              • Kairos
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                15 months ago

                LibreWolf

                TinEye seems to have no problem with this. It seems weird to argue that something that doesn’t work on every browser should be used because the alternative doesn’t work on every browser.

                Google could easily do both. Using JS if canvas fails.

                • lime!
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                  5 months ago

                  librewolf has canvas turned off, because it’s fingerprintable. it’s still in the firefox codebase. all major browsers support canvas and have for more than 10 fifteen years.

                  also, canvas is literally a JS API what are you talking about

  • Sakura
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    15 months ago

    Glory to Peertube!

    They had a redesign and it looks pretty and is usable.

  • @csm10495@sh.itjust.works
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    15 months ago

    99/100 people will not care. I’m one of them.

    For that 1/100: sure it’s infuriating but probably more than mildly.

  • @Artemis@lemmy.ml
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    15 months ago

    I was wondering what that crazy bar at the bottom was! Sometimes it’s green for me. Yet another reason to keep on the degoogling train…