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All windows and tabs will be closed when restarting.
11/13/2025
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**Save and restart** to apply the change.
11/13/2025
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Select a new security level.
11/13/2025
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In the **Security Level** settings, select **Change**.
11/13/2025
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Select **Settings** in the **Security level** menu.
11/13/2025
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Select the [[!img security-level.png link="no" class="symbolic"]] icon on the right of the address bar.
11/13/2025
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To change the security level:
11/13/2025
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<pre>Access to the file was denied</pre>
11/13/2025
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[Tor Support: How HTTPS encryption and Tor works in Tor Browser to enhance your privacy and anonymity](https://support.torproject.org/about-tor/security/https-encryption-and-tor/)
11/05/2025
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[[!img letter-boxing.png class="screenshot" alt=""]]
09/18/2025
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Select the [[!img tor-circuit.png alt="Tor Circuit" class="symbolic"
link="no"]] button in the address bar to show the relays in the Tor circuit
that is used to connect to the website in the current tab.
09/18/2025
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[[!img circuit-view.png class="screenshot" alt=""]]
09/18/2025
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[[!img security-levels.png class="screenshot" alt=""]]
09/18/2025
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[[!img doc/anonymous_internet/Tor_Browser/riseup.png class="screenshot" alt=""]]
09/18/2025
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[[!img lib/apps/tor-browser.png link="no" alt=""]]
09/18/2025
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*[Tor Browser](https://www.torproject.org)* is a web
browser based on [Mozilla Firefox](https://www.firefox.com/) but configured
to protect your privacy.
09/02/2025
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The letterboxing feature of *Tor Browser* works by adding gray margins to the browser window when the window is resized. The webpage remains as close as possible to the desired size without revealing the actual size of the window.
06/26/2025
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The letterboxing feature of *Tor Browser* helps to prevent websites from identifying your browser based on the size of its window. Without letterboxing, websites could use the size of the browser window to track visitors or weaken your anonymity.
06/26/2025
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You can use *[[Onion Circuits|doc/anonymous_internet/tor/circuits]]* to get more detailed information about the circuits being used.
06/26/2025
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Click on the **[[New Tor circuit for this site|Tor_Browser#circuit-view]]** button to use a different circuit.
06/26/2025

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