Explainpaper

Explainpaper is an AI paper-reading companion built for researchers and students, with the core promise of "reading research papers 10x faster." Through an extremely intuitive "highlight to explain" interaction, it breaks down the barrier of obscure jargon in academic literature, helping readers quickly digest complex academic and technical documents.

Core Capabilities

• Instant highlight explanations: No copy-pasting needed—highlight any difficult sentence or term in a PDF and the AI sidebar immediately provides a clear, plain-language explanation.
• Adjustable explanation depth: Supports customizing analysis depth to your own foundation, switching seamlessly between "explain like I'm 5" and "expert-level analysis" with one click.
• Immersive document Q&A: Allows multi-turn follow-up questions on specific highlighted passages, or questions across the whole document; the AI strictly answers based on the current paper's content, keeping information from drifting.
• Overcoming language barriers: Supports translation and analysis across 50+ languages, letting users deeply understand obscure English academic writing in their native language (such as Chinese).
• Seamless Zotero integration: Official native support for importing your Zotero library fits perfectly into researchers' existing literature management and immersive reading workflows.
• Deep formula and chart analysis: The Pro edition addresses science papers' pain points with a Math Explain feature that precisely breaks down and explains complex mathematical formulas and physics derivations.

Use Cases Best for graduate students, PhD candidates, and interdisciplinary researchers who need to closely read large volumes of English literature, plus professionals reading technical white papers. If you are often stuck by complex clauses, industry jargon, or unfamiliar cross-domain concepts, it is an excellent icebreaker.

Unique Advantages Unlike competitors that lean toward global summaries, Explainpaper refuses to let AI replace reading and instead focuses on deep digestion of a single paper. Its "highlight-sidebar explanation" design fits immersive reading sightlines perfectly, eliminating the trouble of composing prompts and minimizing the cognitive load of close reading.

Editor's Review This is currently the paper-reading aid that best matches research intuition. Restrained and focused, it solves the core workflow gap from literature management to reading, and the free version's unlimited highlight explanations show real goodwill. For academics who need to chew through difficult papers, Explainpaper is a dedicated tutor sitting beside you ready to answer questions—worth adding to your daily research toolbox.