Paperi
Paper → narrated video

Watch the paper.
Don't just read it.

Drop in a research PDF. Paperi returns a narrated video walkthrough — the key ideas, figures, and results explained out loud and highlighted on the page as they're spoken.

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Free to start · English papers, 15 pages at a time

One paper, two depths

The same idea, told two ways.

Overview 3–5 min

What it’s about

“Many people can succeed and still feel like frauds. The challenge is finding out how common those feelings are, and whether social circumstances help shape them, without making people answer a long questionnaire.”

Saw the study in the news, or is it the field next door? Everyday words, no jargon, no PhD required.

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In depth 8–16 min

How it works

“Impostor feelings are widely discussed, yet the evidence has mostly come from small, cross-sectional student samples. This paper asks whether just three items can make that research practical at scale and over time.”

For the seminar, the journal club, or the field next to yours: the method and the results, walked through on the real figures.

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See it in action

Highly accurate protein structure prediction with AlphaFold 4:07

Highly accurate protein structure prediction with AlphaFold

Every cell depends on proteins, but scientists have seen the shape of only a tiny fraction of them. AlphaFold showed that a sequence of chemical letters can be enough to predict a protein’s three-dimensional form with near-experimental accuracy.

OverviewIn depth

Reinforced Labels: Multi-Agent Deep Reinforcement Learning for Point-Feature Label Placement 10:47

Reinforced Labels: Multi-Agent Deep Reinforcement Learning for Point-Feature Label Placement

What if every label on a crowded map had its own learning agent? This paper turns label placement into a multi-agent reinforcement-learning problem, and gets more complete layouts, at the cost of speed.

OverviewIn depth

How it works

1 · Upload

Hand over a PDF. We check it and show what you'll get before anything runs.

2 · Narration

A clear voice walks the paper end to end — no wall of text.

3 · Highlights

The page pans and zooms to each figure and line as it's spoken.

Papers, explained

No paper handy?

338 open-access papers, already explained and free to watch. The newest:

Fast and slow surfactants in turbulence-driven bubble breakup 4:22

Fast and slow surfactants in turbulence-driven bubble breakup

Zhan Rui Wu, Tristan Aurégan, Luc Deike

A stormy patch of water can make bubbles in two very different ways: surfactants may leave the larger bubbles untouched while creating up to five times as many tiny ones. The key is not just what the surfactant is, but how fast it arrives.

OverviewIn depth

Solvent effects on the electronic structure, excited states, and nonlinear optical properties of two anthracene-based chalcone derivatives: a DFT and TD-DFT study 4:50

Solvent effects on the electronic structure, excited states, and nonlinear optical properties of two anthracene-based chalcone derivatives: a DFT and TD-DFT study

Renato Medeiros

What if the liquid around a molecule could change not just how it absorbs light, but which of two molecules appears more powerful? This study finds that the answer can switch with the solvent.

OverviewIn depth

Assessing primary health care network preparedness for future pandemics in Lebanon 3:58

Assessing primary health care network preparedness for future pandemics in Lebanon

Zeina Salaheddine Mneimneh, Michele Kosremelli-Asmar

A health clinic can report a dangerous disease quickly and still be unprepared for the next pandemic. In Lebanon, that contradiction is exactly what this study uncovered.

OverviewIn depth

All 338 papers →

Author Studio

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Publish the official video abstract — the same narrated video readers make here, except it's yours. Add a line, cut a line, change every highlight until it says exactly what you'd say, then publish when it's ready: a share page and a 1080p MP4, no watermark, online for good, no subscription.

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Questions, answered

How long does it take?

A few minutes for a typical paper. The page updates itself — keep it open, or bookmark it and come back.

Is my PDF private?

Yes. Your PDF is used only to make your walkthrough — never shared or shown to anyone else. On the free plan, your uploaded PDF is deleted within 7 days, and the walkthrough stays online at its link for 30 days before it is archived; with Reader, your walkthroughs stay online while you subscribe. You can delete any walkthrough yourself, or ask us to erase it, anytime. Either way, walkthroughs are unlisted — only people you share the link with can watch.

What papers work best?

Text-based PDFs in English. A walkthrough covers up to 15 pages (30 with Reader), not counting references; for a longer PDF you choose which part. Scanned PDFs aren't supported yet.

How faithful is the narration?

It's grounded in the actual paper: the highlights point at the exact lines and figures being spoken about, so you can check every claim against the source while you watch.

What does it cost?

The free tier is 2 walkthroughs a month watermarked across the pages. Reader is $9/month for clean, unlimited (fair-use) walkthroughs and a priority queue. Wrote the paper yourself? Drafting a video abstract of your own paper in Author Studio is free — publishing it is a one-time $29.

Can I publish a video abstract of my own paper?

Yes — that's Author Studio. Draft it free. Add a line, cut a line, change every highlight until it says exactly what you'd say, then publish for a one-time $29: a share page and a 1080p MP4, no watermark, online for good, no subscription.

Got a paper?

Upload the PDF — watch it explained in a few minutes. Free to start.

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