PDFast: PDF Reader AI & TTS

Open any PDF in seconds — and discover what it really contains.

PDFast is a free PDF reader for Android that goes beyond the printed page. Every time you open a document, the app performs an automatic check that reveals what you can't see: invisible text, hidden instructions, and signs of AI-generated content. Everything happens offline, right on your device, without sending your files to the cloud.

🔎 AUTOMATIC SECURITY CHECK
• Detects hidden text and invisible characters inside the PDF
• Identifies embedded instructions and suspicious metadata
• Flags signs of AI-generated content
• Runs automatically when you open a document
• 100% offline: your privacy is preserved

📖 COMPLETE & FAST PDF READER
• Instantly open PDFs from your device, WhatsApp, email, and downloads
• Auto-resume: returns exactly to the page where you left off
• Page bookmarks to save important passages
• Interactive table of contents and thumbnail grid for quick navigation
• Smart in-text search — finds words even without typing accents
• Vertical or horizontal scrolling, night mode, light and dark themes
• Keeps the screen on while you read

🔊 LISTEN ALOUD (TTS)
• Page text narration using the Android system voice
• Perfect for studying, reviewing exams, or listening to long documents
• Works offline with voices already installed on your device

📄 EVERYDAY TOOLS
• Smart selection: copy numbers and payment codes with one tap
• Recent files history for instant access to your PDFs
• Share documents directly from the reader

⭐ PREMIUM FEATURES (optional one-time purchase)
• Integrity report: detailed verification certificate for your document
• DOCX to PDF conversion
• Text recognition in scanned images (OCR)

🔒 REAL PRIVACY
PDFast was designed to protect your documents:
• Your files never leave your device
• No sign-up, no login, no monthly subscription
• No personal data collection

Keywords: PDF reader, open PDF, offline PDF, TTS voice, artificial intelligence, AI detector, PDF security, document reader, free.

Download PDFast now and read your PDFs with more security and convenience.