Request for community feedback: Does your Tor Browser screen open by default with a content window rounded to a multiple of 200px x 100px, 100px x 100px, or some other size? Please submit a comment indicating (1) 200px x100px, (2) 100px x 100px, or (3) some other size. In your comment, you simply can state: "1", "2", or "3". Thank you

You can confirm your default screen size by using the Fingerprint Central test, which will report your screen size, and whether your screen is at one of the recommended sizes.

To take the screen test, connect to Fingerprint Central, enable JavaScript in Tor Browser, and, near the top of the Fingerprint Central page, click on the TOR tab to run the test.

If you default screen size has a content window rounded to a multiple of 200px x 100px, the test will display the following message after you run the test and click the DETAILS button:
 

Your Tor browser is at one of the recommended sizes!
 

If your screen size does not have a content window rounded to a multiple of 200px x 100px, the test will display the following message after you run the test and click the DETAILS button:
 

Your Tor browser is not at the recommended size.
It should be either at 1000x1000 or at a multiple of 200x100.

 
Reference — Tor Project Support Portal, [What are grey bars on resized Tor Browser window?](https://support.torproject.org/tbb/maximized-torbrowser-window/ "https://support.torproject.org/tbb/maximized-torbrowser-window/"]: "Tor Browser in its default mode is starting with a content window rounded to a multiple of 200px x 100px to prevent fingerprinting the screen dimensions."

 
Reference — mozilla-central → / resistfingerprinting / RFPHelper.jsm (lines 384-394):

steppedRange(aDimension) {
    let stepping;
    if (aDimension <= 50) {
        return 0;
    } else if (aDimension <= 500) {
       stepping = 50;
    } else if (aDimension <= 1600) {
       stepping = 100;
    } else {
       stepping = 200;
    }  

 
Reference — Tor Project > Documentation > b. Tor Browser Design Document > [4.6](https://2019.www.torproject.org/projects/torbrowser/design/#fingerprinting-linkability "https://2019.www.torproject.org/projects/torbrowser/design/#fingerprinting-linkability"] > Specific Fingerprinting Defenses in the Tor Browser > 7. > Implementation Status: "We automatically resize new browser windows to a 200x100 pixel multiple based on desktop resolution by backporting patches from bug 1330882 and setting privacy.resistfingerprinting to true. To minimize the effect of the long tail of large monitor sizes, we also cap the window size at 1000 pixels in each direction."
 

The old Tor Project website vs. the new Tor Project website —

Tor Blog, Meet The New TorProject.org: "Today, we are very happy to announce the launch of our brand new website...If you are looking for any content that existed in the old site and is not on the new one, you can access it here.