Browser Extension · Chrome
181 Zerethon Tools
one click from your toolbar
Install once, use every tool at tools.zerethon.com from any tab. Search, favorites, right-click on a selection, address-bar keyword zt, and JSON, Base64 and Hash that run offline. No analytics. No tracking. Open source.
Searchable launcher
Click the toolbar icon or hit Ctrl+Shift+Z to fuzzy-search all 181 tools by name, slug, or keyword.
Right-click prefill
Select text on any page and right-click → Zerethon Tools. JSON opens in the JSON Formatter, a link or phone number in the QR Code Generator, Base64 in the decoder, source code in Zerethon IDE — or pick the tool yourself. Input prefilled, line breaks kept.
Side panel
Pin the launcher to Chrome's side panel and keep it visible while browsing. Switch tabs without losing your place.
Address-bar omnibox
Type zt regex in the address bar → live suggestions → Enter opens the tool.
Favorites + recents
Star tools to pin them. Recents auto-track your last 8 opens. Both stored on device — favorites sync across your Chrome devices via Google's own infrastructure.
Privacy-first
Zero analytics, zero telemetry. No content scripts, no access to every site: one host (tools.zerethon.com). Selected text travels only in the URL fragment, which is never sent to a server. Open source — audit every line. Privacy policy.
Why an extension at all?
Because typing "json formatter" into Google and clicking the first non-sponsored result every time gets old. The extension puts tools.zerethon.com one keystroke away from any tab.
Do tools run offline in the extension?
Yes, three of them: JSON Formatter, Base64 Encoder & Decoder and Hash Generator run inside the extension with no network access. Every other tool opens on tools.zerethon.com in a new tab.
What data does it collect?
None that leaves your device. Recents and favorites are stored locally. There is no analytics SDK, no telemetry endpoint, no third-party requests. Full disclosure in the privacy policy.
Is the source open?
MIT-licensed at github.com/zerethonapp/extensions. Builds are reproducible — the byte-identical zip we submit to the store comes out of npm run build.