Tor Browser setup guide — the right configuration before you start

Tor Browser’s security level slider exposes three discrete profiles — Standard, Safer, and Safest — each disabling a successively wider class of features. Standard allows JavaScript on all sites, WebGL, and remote fonts. Safer disables JavaScript on HTTP sites, blocks remote fonts, disables some media (audio/video) auto-playback, and disables certain math symbols and icons. Safest disables JavaScript by default on every site, disables WebGL, blocks remote fonts and icons globally.

For darknet-market access the directory recommends Safest. The vast majority of legitimate market storefronts (Anubis, Nexus) work without JavaScript — the modern frontend frameworks degrade cleanly to a server-rendered fallback. Captcha solving may require dropping briefly to Safer for the captcha page only; the slider can be adjusted per-tab without restarting the browser.