General
-Changes apply immediately and are saved for next time.
-Startup
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- Open previous windows and tabs
Restore the tabs from your last session when Theseus starts.
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- Updates
- Theseus already checks the release manifest at boot and every 6h. Click below to check right now.
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- Appearance
-Choose a theme for the browser. System follows your operating system's light/dark setting.
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- Registries
-How Theseus picks between the BCNR / BCDN and ICANN / IANA, when a name exists in both.
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- Collision policy
- A name only exists in both registries when its TLD isn't BCNR-unique (e.g.
.de). BCNR-unique TLDs (that only exist on BCNR) never conflict.
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- Remembered choices
- "Always use …" picks you made from the switcher or the prompt. Reset them to be asked again.
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- System-wide resolver — Ariadne's Thread
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- A local daemon that resolves BCDN names for every browser on this machine
- (Chrome, Edge, Firefox, etc.), not just Theseus. Turning it off means non-Theseus
- browsers stop resolving
- .bch / .x / other BCNR TLDs;
- Theseus keeps working either way, since it has its own built-in resolver.
- checking…
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- Ariadne's Thread isn't installed on this machine. Click Install above
- to run the bundled installer, or grab it manually from
- silentmode.st/tools.
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- Search
-Pick what your address bar and the toolbar dropdown search with.
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- Default search engine
Used when you type into the address bar.
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- Additional search engines
- These appear in the toolbar dropdown. Drag to reorder. Toggle off to move an engine back to the catalog.
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- Add from catalog
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- Discover more engines
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- Or add a custom URL
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- Passwords
-Local password vault. Set once, unlocked with a master password. Encrypted at rest; nothing leaves your machine.
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- Master password
- Used to unlock the vault every session. This is separate from your Ariadne wallet passphrase — memorize it, we can't recover it.
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- Seed for deterministic passwords
- The "Generate" button in an entry derives a password from this seed. Same seed on another device → same passwords for the same site + username.
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- The mnemonic is used only to derive the password-purpose subtree (m/1381'/0'). It is not stored — only the derived subtree key is persisted, encrypted with your master password.
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- Unlock vault
Enter your master password to view or add entries.
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- Your passwords
Reveal, copy, or edit any entry. The vault re-locks when Theseus quits.
Add an entry
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- There is no autofill yet (phase 2). Copy the password from an entry and paste it into the site.
- Performance
-Keep Theseus light on resources.
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- Throttle inactive tabs
Background and inactive tabs use far less CPU. Recommended.
Privacy
-Reduce tracking and lock down device access.
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- WebRTC IP policy
- Controls which IP addresses WebRTC may reveal — the same thing the "WebRTC Network Limiter" extension does, built in. Public interface only hides your local IP; Disable non-proxied UDP is strongest. Tor forces the strongest automatically.
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- Block camera
Deny camera by default — also hides its name from fingerprinting.
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- Block microphone
Deny microphone by default — also hides its name from fingerprinting.
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- Hide media devices
Blank the labels and IDs of all cameras, microphones and speakers from
enumerateDevices() — closes a WebRTC fingerprinting leak, like Firefox.Anti-fingerprinting
-For each: Show (real), Hide (neutral value), Spoof (a decoy), or Manual (set your own).
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- Timezone
What sites read via JavaScript (Intl / Date).
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- Language
navigator.language and the Accept-Language header. Spoof reports a major world language; Manual lets you type any locale.
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- Location
Hide denies geolocation; Spoof reports a chosen region; Manual reports exact coordinates.
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- These reduce tracking and hide your IP, but a custom browser can still be fingerprinted. For maximum anonymity, use the Tor Browser.
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- Storage
-By default Theseus keeps nothing across sessions — everything toggled on here is wiped when you quit. Untoggle a bucket to keep it (e.g. cookies to stay signed in on trusted sites).
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- Clear cookies on quit
Drops session + persistent cookies. You'll sign in again next launch.
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- Clear HTTP cache on quit
Drops cached images / scripts / stylesheets. Sites re-download; small disk win.
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- Clear site storage on quit
Drops localStorage, IndexedDB, service workers, and the cache API. Web-app state resets.
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- Clear history on quit
Drops navigation history + the saved-tabs session file (overrides "Reopen previous tabs").
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- There is no persistent password manager — passwords are never stored to disk regardless of these toggles. Use a dedicated password manager (Bitwarden, KeePass, etc.).
- Extensions
-Small modules that add capabilities to Theseus. Extensions live as folders under
- %APPDATA%\Theseus Navigator\addons\. Drop a folder in, restart, it's live.
- Bundled reference extensions (like the Notepad) are copied there on first run — you can edit or remove them
- without losing anything the browser needs.
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- Installed
-Loading…
Extensions run with full app access — treat installing one like installing an unsigned executable.
- Only load extensions whose source you trust.
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