ThinkPDF: AI Reader,Quiz, Chat

ThinkPDF — AI PDF Reader, Editor & Document Scanner

ThinkPDF is the smartest AI PDF reader, editor, and document scanner for Android. Chat with any PDF, generate quizzes, summarize documents, sign contracts, merge files, convert Word to PDF, and unlock 20+ powerful PDF tools — all in one app.

Whether you're a student, professional, or everyday user, ThinkPDF turns your phone into a complete PDF powerhouse with AI that actually understands your documents.

🤖 AI DOCUMENT INTELLIGENCE

Chat with PDF — Ask questions, get cited answers instantly from any document. No more scrolling through 100-page reports.

AI Summarizer — Summarize any PDF in seconds. Research papers, contracts, study guides — distilled into clear key points instantly.

AI Quiz Generator — Auto-generate multiple-choice quizzes from your PDFs and textbooks. The only AI quiz generator for PDFs on Android.

AI Flash Cards — Create smart revision flash cards from study material with one tap for faster memorization.

PDF Translator — Translate documents into 40+ languages with full AI accuracy and layout preservation.

📖 POWERFUL PDF READER

- Fast, smooth viewer with Night Mode and immersive reading
- Full-text search across entire documents with result navigation
- Smart OCR — reads scanned and image-based PDFs automatically
- AI Context Menu — select any text to instantly explain, summarize, or translate
- Bookmarks, navigation, and personal PDF library management

✏️ PDF EDITOR & E-SIGNATURE

- Annotate — Highlight, underline, draw, and add text to any PDF
- Sign PDF — Digitally sign documents with a natural handwritten signature pad
- Form Filler — Fill interactive PDF forms and applications on your phone
- Watermark, page numbers, and professional document formatting
- Flatten PDF — permanently embed all annotations into your document

🔧 20+ PDF TOOLS IN ONE APP

- Merge PDF — Combine multiple PDFs into one document
- Split PDF — Extract specific pages or split by page range
- Compress PDF — Reduce PDF file size (low / medium / high quality)
- Images to PDF — Convert JPG and PNG photos to PDF
- PDF to Text — Extract and export all text content from any PDF
- Word to PDF — Convert DOCX Word documents to PDF format
- Excel to PDF — Convert XLSX spreadsheets to PDF
- PPT to PDF — Convert PowerPoint PPTX presentations to PDF
- Document Scanner — Scan paper documents with auto-crop and perspective fix
- OCR — Extract text from any scanned or image-based PDF

🔒 SECURITY & PRIVACY

- Lock PDF — Password-protect sensitive documents with encryption
- Unlock PDF — Remove passwords from your own protected PDFs
- Repair PDF — Fix corrupted or damaged PDF files


📂 SMART FILE MANAGEMENT

- Recent, Favorites & All Documents library view
- Search your PDF collection by filename
- Quick share via email, WhatsApp, Drive, or any app
- Set as default PDF handler — every PDF opens in ThinkPDF automatically

⭐ WHO IS THINKPDF FOR?

🎓 Students — Chat with textbooks, generate quizzes, create flash cards, translate papers, and summarize notes. The ultimate AI study tool for exams and coursework.

💼 Professionals — Sign contracts, fill forms, annotate reports, and merge presentations from your Android phone.

🏢 Business & Freelancers — Scan receipts, watermark files, compress invoices, and convert documents without a computer.

🏆 WHY THINKPDF?

✅ AI PDF Chat with cited answers — unique on Android
✅ AI Quiz Generator — only available in ThinkPDF
✅ 20+ tools in one app — replace multiple PDF apps
✅ On-device privacy — your files stay on your phone
✅ Works offline for all core PDF tools
✅ Fast and smooth on mid-range Android devices

Download ThinkPDF free today and experience the future of PDF on Android.

📩 Feedback & support: aithinkpdf@gmail.com