<p>To prevent Tails from running out of memory and crashing, download very big files to the <emi>Persistent/Tor Browser</em</i> folder. All tThe files that you download outside of the Persistent Storage are stored in memory (RAM), which is more limited.</p>
<p>To prevent Tails from running out of memory and crashing, download very big files to the <i>Persistent</i> folder. The files that you download outside of the Persistent Storage are stored in memory (RAM), which is more limited.</p>
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<h1 id="https-everywhere">HTTPS encrypSecure connections with HTTPSEverywhere</h1>
To learn more about HTTPS and how *Tor Browser* protects you, see:
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To change the security level, click on the [[!img security-level.png class="symbolic" link="no"]] icon on the right of the address bar and choose <span class="guilabel">Advanced Security **Settings…</span>**.
To change the security level, click on the [[!img security-level.png class="symbolic" link="no"]] icon on the right of the address bar and choose **Settings…**.
Closes all existing web connections and creates new Tor circuits.
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<p>This feature is not enough to strongly [[separate contextual identities|about/warnings/identity#contextual]] as the Tor circuits used outside of <i>Tor Browser</i> are not changed.</p>
<p>This feature is not enough to strongly [[separate contextual identities|about/warnings/identity#contextual]] as the Tor circuits used outside of <i>Tor Browser</i> are not changed.</p>
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-Allow you to disable JavaScript completely on some websites only.
Allow you to disable JavaScript completely on some websites only.
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The letterboxing feature of <span class="application">*Tor Browser</span>* 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.
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.
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The letterboxing feature of <span class="application">*Tor Browser</span>* 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.
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.