DrawOnPDF | Free Online Whiteboard & PDF Annotator for Teachers
Engineered for Seamless Online Teaching
Everything educators need to conduct interactive lessons, mark assignments, and present notes effortlessly.
100% Client-Side Privacy
Your files never touch a server. PDF parsing, drawing strokes, and export rendering all execute securely inside your local web browser.
Multi-Page PDF Markup
Upload homework, worksheets, or textbooks. Flip across pages effortlessly with all your drawings preserved independently on each page.
Authentic Board Modes
Switch instantly between an ultra-clean Whiteboard, an eye-friendly Dark Slate board, and a vintage Green Chalkboard with wooden framing.
Pen, Highlighter & Precision Eraser
Smooth anti-aliased pen strokes, translucent highlighter overlays that keep PDF text crystal legible, and a responsive eraser tool.
Stylus & Apple Pencil Ready
Built with modern Pointer Events and touch-action optimization for zero-lag drawing on iPads, Microsoft Surface, and Wacom tablets.
Instant Merged Exports
Export your finished annotations with a single click as a high-resolution PNG image or a multi-page merged PDF document.
How to Annotate PDFs in 3 Simple Steps
No registration, no installation, and no credit card required.
1. Select a Board or Upload PDF
Choose a blank Whiteboard, Dark Slate, or Chalkboard, or click "Upload PDF" to open any worksheet or reading assignment.
2. Draw, Write & Highlight
Use the floating toolbar to switch colors, pick pen widths, underline important definitions, or write step-by-step solutions.
3. Download Merged File
Click "Export" to download your annotated document as a pristine merged PDF or a crisp PNG image ready to share with students.
Support Free Educational Tools
DrawOnPDF is maintained as a free educational resource for teachers and students worldwide. If this tool saves you time in your classes, consider leaving a tip to keep it online and ad-free!
Frequently Asked Questions
Quick answers about DrawOnPDF, privacy, and teaching workflows.
Is DrawOnPDF completely free to use?
Yes! DrawOnPDF is 100% free with no account creation, no subscriptions, and no watermarks on your exported documents.
Are my uploaded PDF files or student data stored on your servers?
Never. DrawOnPDF runs entirely in your browser using client-side JavaScript. Your documents and annotations never leave your personal computer or tablet.
Can I annotate multiple pages of a PDF document?
Yes. When you open a multi-page PDF, navigation buttons let you switch between pages. Each page remembers its own drawings, and exporting to PDF bundles all pages with their respective annotations.
Does DrawOnPDF work with iPads and Apple Pencils?
Yes. DrawOnPDF fully supports touch screens, styluses, and Apple Pencils with touch-action safeguards to prevent accidental page scrolling while you sketch.
How does the PDF export process work?
The application composites your drawing layers over the original PDF pages at high resolution using jsPDF and downloads the combined file straight to your device.