Zerethon Tools

Right-click a selection to open the right tool: QR code, JSON, Base64, hash, IDE. 3 offline tools + launcher for tools.zerethon.com.

Zerethon Tools is a privacy-first toolkit + launcher for 113 free dev, creator, and web3 utilities. Three of the most-used tools run FULLY OFFLINE inside the extension — no network access, no data leaves your device. THREE TOOLS RUN OFFLINE (no internet required) • JSON Formatter — pretty / minify, indent control, sort keys, line+column error reporting. • Base64 Encoder & Decoder — UTF-8 safe, URL-safe variant, swap input↔output in one click. • Hash Generator — SHA-1 / SHA-256 / SHA-384 / SHA-512 via the browser's Web Crypto API. Hex (lower/upper), Base64, or Base64 URL-safe output. Open these from the launcher — no network call, no log on our server. Airplane-mode safe. 110 MORE TOOLS — ONE CLICK AWAY The other tools open in a new tab on tools.zerethon.com. They cover formatting and converting data, generating test values, working with text and images, and a few web3 helpers. Type a few letters in the launcher to search all 113 by name or keyword. BROWSER-NATIVE SHORTCUTS • Right-click selected text → "Zerethon Tools". The first entry opens the selection in the best-matching tool, picked by simple rules that run locally (no AI, no network): a link, email or phone number → QR Code Generator in the right mode; JSON → JSON Formatter; Base64 → decoder; source code → Zerethon IDE with the language detected; other text → QR code. You can also pick a tool yourself from the same menu. The text is prefilled on tools.zerethon.com or ide.zerethon.com. • Type "zt" in the address bar → autocomplete any of 113 tools. • Pin the launcher to Chrome's side panel — keep it visible while browsing. • Ctrl+Shift+Z (Cmd+Shift+Z on Mac) opens the launcher. Customise the shortcut in chrome://extensions/shortcuts. PRIVACY (READ THIS — IT IS THE WHOLE POINT) • Zero analytics, zero telemetry, zero third-party SDKs. • Minimal permissions — storage, contextMenus, sidePanel, activeTab, scripting — plus a single host: tools.zerethon.com. No <all_urls>, no content scripts. activeTab/scripting only read your selection (with its line breaks) on the tab where you click a Zerethon Tools menu entry. • Favorites and recents are stored on your device only. • Selected text is never sent to our server: it travels in the URL fragment (#…), which browsers do not send to servers, and the destination page decodes it in your browser. • Full source MIT-licensed on GitHub. The submitted package is built reproducibly from source with `npm run build` — you can audit every line and rebuild the same zip locally. NO ADS. NO PAYWALL. NO SUBSCRIPTION. NO SIGNUP. Source: https://github.com/zerethonapp/extensions Privacy policy: https://tools.zerethon.com/extension/privacy Questions, requests, bug reports: support@zerethon.com