🔥 On-device AI • Privacy-first

DenseReader — Summaries that actually teach you something

Extract dense, structured summaries from any webpage using Chain-of-Density. Adjustable detail from overview to research-grade. Runs on your device.

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Chain-of-Density

Iterative refinement creates summaries that are both concise and information-dense. Each pass adds entities and detail.

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Privacy-first

On-device AI via Gemini Nano. Your content never leaves your machine. Zero data collection, zero tracking.

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Adjustable Density

Level 1 for quick overviews → Level 5 for research-grade depth. One slider controls the entire pipeline.

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YouTube Transcripts

Summarize any YouTube video. Fetch transcripts automatically and run them through the CoD pipeline.

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File Upload Support

Upload .md, .txt, .docx, and .pdf files for summarization. Import articles from anywhere.

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Export Anywhere

Copy, download as Markdown/JSON, or send to Readwise and Notion. Works with your workflow.

Free

For occasional readers

$0/mo
  • Density levels 1–3
  • 5 summaries per day
  • Clipboard export
  • On-device AI only
  • Community support

Pro Yearly

Best value — save 35%

$39/yrSave $21
  • All density levels (1–5)
  • Unlimited summaries
  • All export options
  • BYO API key (OpenAI, etc.)
  • Priority support

Pro Monthly

Flexible monthly plan

$4.99/mo
  • All density levels (1–5)
  • Unlimited summaries
  • All export options
  • BYO API key (OpenAI, etc.)
  • Priority support

Frequently Asked Questions

What is Chain-of-Density?
Chain-of-Density (CoD) is an iterative summarization technique that progressively refines a summary, adding entities and detail with each pass. The result is a dense, information-rich summary that captures key facts — unlike traditional single-pass summaries that can be vague. DenseReader runs 5 iterations: each one adds more entities and nuance while maintaining conciseness.
Can I use my own API key?
Yes! Pro users can bring their own OpenAI-compatible API key. This lets you use GPT-4, Claude, or any other provider while still getting the CoD pipeline. On-device AI (Gemini Nano) works without any API key and is available on Chrome 138+.
Can I cancel anytime?
Absolutely. Cancel your subscription from the billing portal at any time. You'll keep Pro access until the end of your current billing period. No questions asked.
Is my data private?
Yes. The free tier runs entirely on-device — your content never leaves. Pro users who configure a remote API key send data directly to their chosen provider; we never see or store your content. We collect zero usage data, zero analytics. See our privacy policy.
What browsers are supported?
DenseReader is a Chrome extension requiring Chrome 116+. On-device AI (Gemini Nano) requires Chrome 138+. Without built-in AI, you can use a remote API key on any Chrome 116+ version.

Ready to read smarter?

Install DenseReader and start extracting dense knowledge from every page you read.

Coming Soon to Chrome Web Store