Video comparison of latest Tor Browser versions for different platforms on YouTube

Hi Tor Developer Team,

We are Zharko Gjurov and Liljana Ackovska - Macedonian (mk-MK) localization mangers for Tor and all Tor-related products.

For the purpose of ours this week “UDBAMK-Tema” release as a part of our project: “Управување со Дигиталната Безбедност и Анонимност” / "Managing with Digital Security and Anonymity" on our web-page: УДБАМК - Тема - UDBAMK
we have published a video comparison of latest Tor Browser versions for different platforms how they perform on YouTube service:

  1. Tor Browser v.13.5.29 on Windows 7 SP1 (x64) on 2GB RAM (as recommended);
  1. Tor Browser v.15.0.19 on Windows 11 25H2 (build 26200.8037 from 03 July 2026) on 8GB RAM (as recommended);
  1. Tor Browser v.15.0.17 on Tails 7.9.1 (from 01 July 2026) on 4GB RAM (as recommended);

We are very sure that all of you are very aware of this situation, and we believe that no one with common sense will use something that is not capable to open/load 10 videos for more than 15 minutes or never!

So, where is the point of the non-logical stopping support for Legacy systems, despite of Mozilla continuous extended support for their Firefox’s ESR 115 legacy channel?!

Sincerely,
Zharko Gjurov and Liljana Ackovska.

Could you provided a bulleted summary of what is wrong in each test and what you would expect? I’m not really interested in sitting through almost half an hour of video when you could just report what the problem is and offer the video reproduction steps as supporting material.

It is said that picture replaces 1.000 words, and a video a 1.000.000, so the videos were recorded in a real time so how can end-non-expert users can see for themselves what is working and what is not!

The length of the video materials as evidences is not up to us but to Tor Browsers performing on different OSes and the result is very clear even if you don’t watch every video till the end, and just skip the middle part and watch end’s result.

Let us be more clear: The goal of the testing was to check up the quality of work of the Tor Browser on today’s supported and unsupported platforms, so the testing task was 10 (ten) randomly chosen YouTube videos from 2025 year put as bookmarks in 1 (one) folder named “Test10Video” and trying to open/load all of them at once in the Tor Browser.

Tests were taken in a virtual machines with default recommended hardware preset for each operating system / platform as their ideal environment, with set recommended RAM memory for each as: 2GB for Windows 7 SP1 (x64), 8GB for Windows 11 25H2 (build 26200.8037 from 03 July 2026), and 4GB for Tails v.7.9.1.

To reproduce the testing you should:

  1. Install VMWare Workstation;
  2. Create Virtual Machine (VM) for each platform / targeted OS and set RAM memory for each as specified above;
  3. Install one per one of the targeted OS specified above; and Install VMWare Tools;
  4. In each VM install the latest supported Tor Browser;
  5. Open the following YouTube video links:

https://www.youtube.com/watch?v=LOvrkjoDDcg

https://www.youtube.com/watch?v=_PS6rQBXJ54

https://www.youtube.com/watch?v=Mzw2ttJD2qQ

https://www.youtube.com/watch?v=ZVkrhHebz1Q

https://www.youtube.com/watch?v=NdvqHc56lE0

https://www.youtube.com/watch?v=rutRDICG2oE

https://www.youtube.com/watch?v=OGO4Mqvo3jI

https://www.youtube.com/watch?v=5oh5A1s7x8I

https://www.youtube.com/watch?v=9MHkTI5_mhs

https://www.youtube.com/watch?v=OpThntO9ixc

  1. In Tor Browser press Alt from the keyboard and check: View->Toolbars->Bookmark Toolbar->Always Show;
    6.1. Right-click on the Bookmark Toolbar and click on “Add Folder…” and in “Name” write “Test10Video”;
    6.2. Put all 10 YouTube videos open tabs in the bookmark folder “Test10Video”;
  2. Close the Tor Browser;
  3. Start counting/measuring the time needed for testing the following:
    8.1. Open Tor Browser and connect;
    8.2. Right-click on the bookmark folder “Test10Video” and choose “Open All Bookmarks”; 8.3. Count/Measure the time needed for all 10 (ten) video tabs to be fully loaded and to be ready for playing;
    8.4. When all tabs end loading with shown specific video Title on each of them, and shown specific thumbnail image and with shown YouTube Play button on each of them is complete, close the Tor Browser from the X in its right corner.

The test is finished, and the counted/measured time for complete opening/loading all of the videos and closing Tor Browser (which in most cases is not right away) is the result of the quality of work of Tor Browser on each platform, at least for the YouTube service which was selected for our testing as one of the most used Internet services available worldwide - meaning - is not blocked by any Tor relay.

And what we expect?

  • At least all new versions of Tor Browser for any platform on a better hardware to perform equal or much better than the old versions, and how the things look at the moment that wouldn’t gonna happen, so at least what we expect is that you really can do as Tor Developer Team is to continue to insert new Firefox’s ESR 115 security releases with security-only updates in to the Tor Browser 13.5.x legacy channel produce chain accordingly with Mozilla’s supporting plans, as you stated before.

P.S. When we speak about using old versions on legacy OS on real hardware in the past, we can say that we have tested bookmark folders with more then 80 (eighty) video tabs which were opened/loaded and ready for playing in only 5 (five) minutes!!!