Sidenote - AI Reading Assistant

Sidenote is an AI reading assistant that lives in your browser's side panel and answers questions about whatever you're reading — a PDF, a web article, your team wiki, or a document in a connected account — with citations that scroll to and highlight the exact source passage.

Stop skim-reading and stop second-guessing AI. Open the side panel on any document and Sidenote will summarise it, chat with it, explain the hard parts, and build a glossary — and show you exactly where every answer came from.

What it does • Summarise with citations — TL;DR bullets, a tight paragraph, or a structured deep-read. Every key point links to its source passage. • Chat with citations — ask anything and watch the answer stream in; click a citation chip and the page jumps to the highlighted passage. • Explain simply — rewrite a dense passage at the reading level you choose, without losing accuracy. • Build a glossary — jargon, acronyms and proper nouns defined from the passages they appear in. • Collections — group documents from different tools and ask one question across all of them; the answer cites which document said what. • Save highlights, search your library by meaning, and export summaries, chats and glossaries to Markdown/CSV.

Works on the documents you already use • PDFs, including scanned files — OCR is built in. • Any web page or long article. • Confluence wikis, straight from the browser, no admin install. • Notion pages you connect. • Google Docs — read-only, cited to the exact passage. • Word files and slide decks in Microsoft SharePoint or OneDrive. • Slack canvases, and your own Word/PowerPoint uploads rendered as print-quality pages.

Why Sidenote is different • Citation-first by design — the model must cite the passages it used, the server validates every quote against the document, and anything it can't verify is dropped. If the document doesn't answer your question, it says so. No silent hallucinations. • One assistant across every tool — not locked to a single platform or sold per seat. Your PDFs, wikis, Notion, SharePoint and Google Docs, all from one place, one subscription. • Private by design — we never train AI models on your documents. Data is stored in a UK region and encrypted at rest. Connected accounts are read-only; disconnecting one deletes its tokens immediately. Delete your account and all data yourself, any time.

Pricing • Free forever — a set number of documents, explanations and glossaries each month. • 7-day Pro trial — every feature, no card required. • Pro plans from £10/month — higher limits, document chat and saved thread history; top tiers unlock our most capable model.

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