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.
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 SoonMozilla Firefox
Version 128+
Coming SoonMicrosoft Edge
Version 120+
Coming SoonAlso compatible with Brave, Vivaldi, and other Chromium-based browsers.