Complete suite of powerful, secure PDF tools. Process your documents quickly and professionally, right in your browser with enterprise-grade quality.
Upload any PDF and let AI create summaries, flashcards, study outlines and interactive quizzes. Perfect for students, teachers and lifelong learners.
Get comprehensive summaries of any document in seconds. Perfect for quick review before exams.
Auto-generate question & answer flashcards. Flip, study, and memorize key concepts effortlessly.
Host live classroom quizzes like Kahoot! Students join with a code and compete in real-time.
Structured hierarchical outlines with main topics, subtopics and key concepts to memorize.
5 free uses per month • No registration required
Our most used tools trusted by millions
Intelligent compression with quality settings, preview, and professional optimization.
Advanced merging with drag-and-drop reordering and page configuration.
Professional splitting with visual selection, multiple modes, and batch processing.
Advanced digital signature solution with multi-page support and professional stamping.
Complete PDF editing suite with text, images, annotations and more.
Create and edit interactive PDF forms with multiple field types and professional form management.
Professional rotation with individual page control and real-time preview.
Add page numbers and custom text to your PDF documents with multiple styles.
Precision page extraction with interactive selection and advanced filters.
Extract all embedded images from PDF files with preview and selection.
Professional coordinate detection for precise positioning and documentation.
Intelligent compression with quality settings, preview, and professional optimization.
View and edit PDF document metadata: title, author, keywords and more.
Add text or image watermarks to protect your PDF documents.
Crop PDF pages and trim margins with visual editor.
Fix corrupted or damaged PDF files and recover content.
Flatten PDF form fields, annotations, and layers into a static document.
Permanently remove sensitive text and images from PDF documents.
Check PDF documents for accessibility compliance and WCAG standards.
Combine multiple images into a single PDF document.
Advanced digital signature solution with multi-page support and professional stamping.
Prepare and send documents for electronic signature with legally binding verification.
Add password protection to your PDFs with AES-256 encryption and custom permissions.
Remove password protection from PDFs when you know the password.
Convert PDF documents to editable Word files with text extraction.
Extract tables and data from PDF to Excel spreadsheets.
Convert PDF presentations to editable PowerPoint slides.
Convert PDF pages to high-quality JPG images.
Extract text from scanned PDFs and images using OCR technology.
Translate PDF documents to any language using AI with side-by-side comparison.
Ask questions about your PDF documents using AI. Get instant answers and summaries.
Compare budgets, contracts and documents. Detect price changes and modified clauses with AI.
Create professional resumes and CVs with AI assistance, exported as PDF.
Convert PDF documents to HTML web pages.
Convert PDFs to archival PDF/A format for long-term preservation.
Convert PDF documents to clean Markdown format for easy editing.
Convert Word documents to professional PDF files.
Convert Excel spreadsheets to PDF documents.
Convert JPG images to PDF documents.
Convert HTML code to professional PDF documents.
Convert PowerPoint presentations to PDF format.
Convert Markdown files to professionally formatted PDF documents.
Trusted by professionals worldwide for reliable and secure PDF processing
Your files are encrypted during transfer. Server-processed files are auto-deleted after use.
Process your PDFs instantly with our optimized algorithms.
No technical skills required. Just upload, edit, and download.
Most tools are free with no hidden fees. Premium for power users.
Integrate legally binding electronic signatures into your ERP, CRM, or web application. Complete REST API with real-time webhooks.
Intuitive endpoints to create, manage, and track signature requests from any system.
Receive instant notifications when your documents are signed, completed, or updated.
Legally valid documents, signature certificates, and complete process tracking.
curl -X POST https://pdf-ninja.io/api/v1/signature-requests \ -H "Authorization: Bearer sk_live_xxx..." \ -H "Content-Type: application/json" \ -d '{ "title": "Contract Agreement", "signers": [{ "name": "John Doe", "email": "[email protected]" }], "pdf_base64": "JVBERi0xLjQK..." }'