Zerethon Tools

About

Zerethon Tools is a privacy-first toolkit + launcher for 112 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 or right-click selected text on any page —
the text is prefilled, ready to format/encode/hash. No network call, no
log on our server. Airplane-mode safe.

109 MORE TOOLS — ONE CLICK AWAY
Open as new tabs on tools.zerethon.com. The launcher searches all 112 by
name, slug, or keyword. A few examples:
SQL Formatter · UUID Generator · URL Parser · Color Converter · Markdown
to HTML · CSV to JSON · YAML to JSON · Unix Timestamp Converter · UTM
Builder · Regex Data Generator · Password Generator · Lorem Ipsum · Text
Case Converter · Image Compressor · ETH Unit Converter · Wallet Address
Validator · MD5 Hash Generator · …

BROWSER-NATIVE SHORTCUTS
• Right-click selected text → "Zerethon: Format as JSON / Decode Base64 /
  Encode Base64 / Hash (SHA-256) / Convert case / Parse URL". For the three
  offline tools the text is prefilled in the extension's own page. For the
  rest, the matching tool opens on tools.zerethon.com.
• Type "zt" in the address bar → autocomplete any of 112 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.
• Three permissions only — storage, contextMenus, sidePanel — plus a single
  host: tools.zerethon.com. No <all_urls>, no content scripts.
• Favorites and recents are stored on your device only.
• Selected text is never logged on our server. Either it stays inside the
  extension (offline tools) or it travels in a URL query parameter that
  the destination tool decodes client-side.
• 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: [email protected]