This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Marginalia
PDF notes that remember their page, and hand off to your AI
Pull passages out of any PDF onto a notes canvas, write what you think, and link ideas with labels like "supports" or "contradicts". Click any note to jump back to its exact page. Export the whole map as AI-ready Markdown and give it to ChatGPT or Claude with the PDF. Free, open source, no account, and nothing leaves your browser.
I built this for reading papers and textbooks. Highlights in a PDF pile up with no structure; notes apps lose track of where a quote came from. Marginalia keeps both: a canvas of linked excerpts where every card remembers its page. The Markdown export is the part I didn't expect to love: it gives an AI your structure and your notes, not just the raw document. It's MIT licensed and runs entirely in your browser. Feedback very welcome.
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About Marginalia on Product Hunt
“PDF notes that remember their page, and hand off to your AI”
Marginalia was submitted on Product Hunt and earned 0 upvotes and 1 comments, earning #2 Product of the Day. Pull passages out of any PDF onto a notes canvas, write what you think, and link ideas with labels like "supports" or "contradicts". Click any note to jump back to its exact page. Export the whole map as AI-ready Markdown and give it to ChatGPT or Claude with the PDF. Free, open source, no account, and nothing leaves your browser.
Marginalia was featured in Productivity (661.9k followers), Open Source (68.9k followers), Education (79.3k followers) and GitHub (41.4k followers) on Product Hunt. Together, these topics include over 245.3k products, making this a competitive space to launch in.
Who hunted Marginalia?
Marginalia was hunted by Plush Dessert. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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