Your documents are transferred over secure HTTPS connections. Uploaded files are stored temporarily for processing and are not shared with third parties. Text you select is sent to OpenAI's API for explanation. If you sign in, your account information is stored securely in Supabase. Chat conversations and explanation history follow the same privacy standards.

What file types do you support?

We currently support PDF files. Documents with selectable text give the best results. Scanned PDFs without a text layer are not currently supported.

Can I use it for free?

Yes. You can try a sample document without signing up — no account needed. To upload your own PDFs and save your history, a free Google sign-in is required. Free usage includes a daily allowance of AI explanations and follow-up chats.

Which AI models power the explanations?

We use leading AI models, including OpenAI's GPT and open-source alternatives like Mistral. Responses stream in real-time so you can start reading immediately, and you can ask follow-up questions in an integrated chat.

Can I ask follow-up questions about an explanation?

Yes. After receiving an explanation, you can ask follow-up questions in a built-in chat panel. The AI keeps the context of your highlighted text and previous answers, so you can dig deeper without re-selecting anything.

Does it support languages other than English?

Yes, we support over 25 languages for both document upload and explanation output. Ideal for non-native speakers working with documents in a second language.

Can I use this on my phone or tablet?

Yes. DocumentExplainer is fully responsive and works in any modern mobile browser — no app download required.

DocumentExplainer — The AI PDF Explainer for Complex Documents

DocumentExplainer is an AI PDF explainer that lets you highlight any sentence in your document and get a streaming explanation. Ask follow-up questions in a built-in chat. Upload research papers, legal contracts, or any PDF — understand complex text in seconds, free.

Features

Streaming Explanations - Get real-time AI explanations as they're generated.
Follow-up Chat - Ask follow-up questions without re-selecting text.
Multi-Language Support - Get explanations in 26 languages.
Secure and Private - Documents are processed securely over HTTPS.
Free to Try - Try a sample PDF with no sign-up. Sign in with Google to upload your own.

Frequently Asked Questions

What types of documents work best?: PDF documents are supported. It works great for academic papers, technical manuals, legal agreements, and any text-heavy document.
Is my data secure?: Absolutely. We process your document in memory and never save it. All data is transferred over SSL.

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