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Ask Questions About a PDF
Works on contracts, manuals, research papers, salary slips — any PDF up to 50MB.
Upload any PDF and ask questions in plain language. Get instant answers with page references. Perfect for contracts, research papers, manuals, and reports. Siliph is free, needs no account, and processes files on secure servers in Europe and India, or directly in your browser where possible.
Loading the Chat with PDF workspace… Files are processed securely and deleted automatically.
Works on contracts, manuals, research papers, salary slips — any PDF up to 50MB.
Works on contracts, manuals, research papers, salary slips — any PDF up to 50MB. Everything runs in your browser or over an encrypted connection, and a built-in assistant suggests the right settings for portals and forms.
Works on contracts, manuals, research papers, salary slips — any PDF up to 50MB. Chat with PDF lets you ask natural-language questions about an uploaded document—citing pages when possible—like having a research assistant over your contract, textbook, or manual.
Support engineers, law students, and procurement staff need answers buried on page 84 without ctrl-f guesswork. Conversational Q&A surfaces definitions, obligations, and exceptions in context you can paste into emails or study notes.
Siliph Chat with PDF runs in the browser-backed AI stack with encrypted sessions, scoped to the file you uploaded for that chat. Follow-up questions refine earlier answers when you challenge assumptions or request tables.
Citation quality depends on OCR and digital text quality—run OCR PDF on scans first. The assistant does not replace professional legal or medical advice; treat outputs as navigation aids requiring human verification.
Sessions and files purge within two hours on the free tier, and chatting requires no signup for short documents. Split very large PDFs by chapter with Split by Bookmarks to stay within per-task page limits.
Use AI PDF Summarizer first for orientation, then chat for deep dives on clauses that matter to your negotiation or exam essay.
Siliph AI tools summarize and chat with PDFs in the browser, sending only encrypted content needed for analysis—never hoarding your document library. Sessions expire and files purge within two hours on the free plan, with no signup to try AI assistance.
This interactive preview demonstrates the interface layout and processing controls you will find in our workspace above. Everything is designed to be fast, responsive, and completely secure.
Click or drag PDF files here
Supports files up to 50 MB / 50 Pages
Follow these detailed steps to complete your task securely in the cloud.
Drag and drop your files into the workspace, or click browse to choose files securely.
Adjust the settings available on the layout options panel to your preferences.
Click the process button to start editing securely in the cloud.
Save the final processed file directly to your desktop or device.
Discover why thousands of professionals trust Siliph for fast, high-quality document editing and conversion.
Built-in AI suggests optimal settings and answers questions for every PDF tool.
All tasks run over encrypted SSL channels, keeping your documents private.
Experience quick conversions and edits powered by custom cloud processors.
Works inside any browser on Windows, macOS, Linux, iOS, and Android.
Works on contracts, manuals, research papers, salary slips — any PDF up to 50MB. Siliph is free to start — no signup required.
No. The tool runs in your browser on phone, tablet, or desktop.
Yes. Siliph lets you use Chat with PDF for free. The free plan includes 3 tasks per hour with files up to 50 MB or 50 pages. Paid plans remove these limits and add priority processing.
Yes. Files are transferred over an encrypted HTTPS connection, processed automatically without human access, and deleted from our servers within 2 hours on the free plan.
No. Chat with PDF runs entirely in your web browser and works on Windows, Mac, Linux, Android and iOS. There is nothing to download or install.
Add Chat with PDF to your blog or website for free. The embed includes a dofollow backlink to Siliph when you use the attribution snippet below — that helps both sites rank.
Embed (iframe)
<iframe src="https://siliph.com/ask-pdf-questions-online/?embed=1" title="Chat with PDF — Siliph" width="100%" height="620" style="border:0;border-radius:12px;max-width:900px;" loading="lazy" allow="clipboard-write"></iframe> <p style="font-size:12px;color:#666;margin-top:8px;"><a href="https://siliph.com/ask-pdf-questions-online/" title="Chat with PDF — Siliph">Chat with PDF</a> powered by <a href="https://siliph.com/" title="Siliph — Free PDF Tools">Siliph</a></p>
Link for blog posts / tool lists
<p style="font-size:12px;color:#666;margin-top:8px;"><a href="https://siliph.com/ask-pdf-questions-online/" title="Chat with PDF — Siliph">Chat with PDF</a> powered by <a href="https://siliph.com/" title="Siliph — Free PDF Tools">Siliph</a></p>
Direct link: https://siliph.com/ask-pdf-questions-online
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Works on contracts, manuals, research papers, salary slips — any PDF up to 50MB.
or drop files here
Upload any PDF and ask questions in plain language. Get instant answers with page references. Perfect for contracts, research papers, manuals, and reports. Siliph is free, needs no account, and processes files on secure servers in Europe and India, or directly in your browser where possible.