Sidenote
- Android app
- Not listed
- Free plan
- Yes
- Paid plans from
- £1.20/mo
- Runs on
- Browser extension, Web
Summary
Sidenote is an AI reading assistant for asking questions about documents in a browser and checking the passages behind its answers. Selecting a citation takes you to the cited text and highlights it. It can summarize and explain documents, build glossaries, search files, and organize reading with notes, highlights, tags, starred documents, and collections. It reads browser-rendered PDFs, including scanned files with OCR, and accepts PDF, DOCX, PPTX, TXT, MD, MDX, and RTF uploads. Integrations are listed for Confluence, Notion, Google Docs, Slack canvases, SharePoint, and OneDrive. Extensions are available for Chrome, Edge, and Firefox; Opera is described as coming soon. A free plan is available, and Pro is £10/mo with a 7-day trial that requires no card. The trial is limited to 10 documents, 20 summaries, and 10 chat turns. Users can choose to store documents while an account is open or discard them, which purges a document within 24 hours. The maker says content is not used to train AI models. Sidenote is not yet SOC 2 certified.
Who it is for
Sidenote may suit readers and teams in engineering, product, customer success, legal, operations, or research who work with documents. Its cited answers and document tools are useful for locating and reviewing information across files.
What is good
- Answers link to highlighted source passages.
- Reads scanned PDFs with OCR.
- Accepts seven listed upload formats.
- Offers multiple document integrations.
- Retention can be set to Store or Discard.
What to know first
- Free plan allows three documents per month.
- No collections on the Free plan.
- Not yet SOC 2 certified.
- Opera extension is coming soon.
Verdict
Sidenote combines document questions with citations and a broad set of reading and organization tools. Check the plan limits and compliance status against your needs before choosing it.
Sidenote plans and pricing
All plansCompared on AI summarizers
- Free plan
- Yesgetsidenote.app
- Document upload
- Yesgetsidenote.app
- Webpage summaries
- Yesgetsidenote.app
- Transcript summaries
- Yesgetsidenote.app
- Summary length control
- shortgetsidenote.app
- Export formats
- markdowngetsidenote.app
Facts
- What it does
- Sidenote is an AI reading assistant that answers questions about documents in the browser and shows where each answer came from.getsidenote.app · 29 Sept 2026
- Cited answers
- Answers cite source passages, and clicking a citation scrolls to and highlights the passage in the page.getsidenote.app · 29 Sept 2026
- Document tools
- Features include summaries, explanations, glossaries, multi-document collections, document search, notes, highlights, tags, and starred documents.getsidenote.app · 29 Sept 2026
- File support
- Sidenote reads browser-rendered PDFs, including scanned PDFs with OCR, and accepts PDF, DOCX, PPTX, TXT, MD, MDX, and RTF uploads.getsidenote.app · 29 Sept 2026
- Integrations
- Dedicated integrations include Confluence, Notion, Google Docs, Slack canvases, SharePoint, and OneDrive.getsidenote.app · 29 Sept 2026
- Browser availability
- The site lists Chrome, Edge, and Firefox extensions, with Opera described as coming soon.getsidenote.app · 29 Sept 2026
- Trial
- The 7-day Pro trial requires no card and has limits including 10 documents, 20 summaries, and 10 chat turns.getsidenote.app · 29 Sept 2026
- Privacy
- The maker says user content is never used to train AI models and its AI providers use no-training defaults on the API tiers used.getsidenote.app · 29 Sept 2026
- Data residency
- Documents are stored in Supabase in the UK eu-west-2 London region, encrypted at rest and isolated per account with row-level security.getsidenote.app · 29 Sept 2026
- Retention
- Users can choose Store retention while the account is open or Discard, which purges a document within 24 hours; users can also delete library documents at any time.getsidenote.app · 29 Sept 2026
- Compliance limit
- Sidenote says it is not yet SOC 2 certified and that formal attestation is on its roadmap.getsidenote.app · 29 Sept 2026
- Who it is for
- The maker describes use cases for engineering, product, customer success, legal and operations, and research teams.getsidenote.app · 29 Sept 2026
- Support
- The maker lists support by email at [email protected] and says it is supported by its solo developer, Lewis Hadden.getsidenote.app · 29 Sept 2026
Company
- Headquarters
- Whittlesey, United Kingdomgetsidenote.app · 23 Sept 2026
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Where it ranks on Everything Xiaomi
- Best AI Summarizers in 2026#6 of 35
Is Sidenote yours?
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Sources
- getsidenote.app/about· checked 29 Sept 2026
- getsidenote.app/features· checked 29 Sept 2026
- getsidenote.app· checked 29 Sept 2026
- getsidenote.app/pricing· checked 29 Sept 2026
- getsidenote.app/security-compliance· checked 29 Sept 2026