Skip to content
Open Source · MIT License

Your notes, right in your browser sidebar

Our core principle: your data stays on your device

A privacy-first note-taking extension. Rich text, AI, diagrams, OCR — all offline by default. No account required.

85 Languages
Open Source
Privacy-First
Offline by Default

Everything you need, nothing you don't

A full-featured note-taking workspace that respects your privacy and runs where you already are — your browser.

Privacy-First

100% local storage in IndexedDB. No account, no tracking, no cookies. Your notes never leave your device unless you choose otherwise.

Rich Text Editor

Tiptap-powered editor with Markdown support, tables, code blocks, math equations (KaTeX), callout blocks, and 35+ slash commands.

AI Assistant

Gemini API, Gemini Web, and Chrome built-in Nano AI. Summarize, translate, fix grammar — with automatic PII redaction before any cloud call.

Speech & OCR

Whisper speech-to-text supporting 99+ languages and Tesseract OCR with 100+ languages — both run entirely on your device.

Mermaid Diagrams

25 diagram types with a visual drag-and-drop builder. Flowcharts, sequence diagrams, state machines, Gantt charts, and much more.

Optional Google Sync

Back up notes to Google Drive and sync deadlines to Google Calendar — only if you enable it. Your data, your choice.

85 Languages

Full UI translated into 85 languages including right-to-left support for Arabic, Hebrew, Persian, and Urdu.

Open Source

MIT licensed. Every line of code is auditable on GitHub. Contribute, fork, or just read — full transparency.

Get Hypnoter for your browser

Available for all major browsers. Install it once, and your notes are always a click away.

Google Chrome

Version 120+

Coming Soon

Mozilla Firefox

Version 128+

Coming Soon

Microsoft Edge

Version 120+

Coming Soon

Also compatible with Brave, Vivaldi, and other Chromium-based browsers.