Sidenote: AI Sidebar Assistant – Summarize, Rewrite & Voice Notes

Sidenote is a free AI assistant that lives in your browser's side panel. Summarize any webpage, ask questions about what you're reading, rewrite or translate text in one click, and capture voice notes that organize themselves. No sign-up needed. ★ AI CHAT IN YOUR SIDEBAR Open Sidenote next to any tab and ask anything. Start a new chat whenever you like and pick up old conversations from your chat history. ★ SUMMARIZE ANY WEBPAGE One click turns a long article, blog post, report or documentation page into a short summary. Tick "Ask about this page" to chat with the webpage itself: ask follow-up questions, pull out key points or check a detail without scrolling. ★ REWRITE, SHORTEN, FIX GRAMMAR, EXPLAIN, TRANSLATE Select text on any website and a small toolbar appears: • Rewrite: make writing clearer and more natural (a quick paraphrasing tool) • Shorten: cut text to half the length and keep the key points • Fix grammar: correct grammar, spelling and punctuation • Explain: get plain-language explanations of jargon or dense paragraphs • Translate: into English, Spanish, French, German, Dutch, Hindi, Portuguese, Italian, Japanese, Chinese or Arabic Copy the result, or replace the selected text directly in emails, docs, comment boxes and other text fields. ★ VOICE NOTES WITH SPEECH TO TEXT Click Record and talk. Sidenote transcribes your voice, removes filler words, fixes punctuation and saves a clean note. ★ NOTES THAT ORGANIZE THEMSELVES Every note is saved with the webpage it came from, given a title and tagged automatically. Search across all your notes in an instant. Save any AI answer to your notes with one click. ★ FREE PLAN • 20 AI messages a day, shared across chat, page summaries and text actions • Up to 50 saved notes • No account or credit card needed Sidenote Pro, with higher limits and a stronger model, is coming soon. Join the waitlist from inside the extension. ★ PRIVACY • Chats and notes are stored in your browser, not on our servers. • Page text is only sent for processing when you ask about a page or summarize it. • Voice transcription uses Chrome's built-in speech recognition. • Runs on fast open AI models (OpenAI gpt-oss and Meta Llama). HOW TO USE 1. Click the Sidenote icon in your toolbar to open the side panel. 2. Ask a question, or click "Summarize page". 3. Select text on any site to rewrite, shorten, fix grammar, explain or translate it. 4. Open the Notes tab to type or record a note. Great for students, researchers, writers, marketers, job seekers and anyone who reads a lot online.