Tutorial

Easily highlight and annotate PDFs during online classes

By PDFjin Content Team Jul 30, 2026 6 min read
Excel to PDF Illustration

Overcoming Annotation Challenges in Online Learning

Effectively highlighting and annotating PDFs during online classes is crucial for active learning and retention. Rather than printing or juggling multiple apps, direct annotation within your digital documents streamlines your study process. The most effective methods involve either dedicated desktop PDF software or convenient web-based editors, each offering distinct advantages for different learning scenarios.

Desktop PDF Annotators for Focused Work

Desktop PDF applications offer robust features, often without an internet connection, making them ideal for distraction-free, in-depth study sessions. They typically provide a comprehensive suite of tools and handle larger files more efficiently than browser-based solutions.

Advantages

Disadvantages

Step-by-Step Usage General Workflow

  1. Install Software: Download and install a reputable PDF editor (e.g., Adobe Acrobat Reader DC, Foxit Reader, Xodo Desktop).
  2. Open PDF: Launch the application and open your class PDF document.
  3. Select Annotation Tool: Navigate to the toolbar and choose your desired tool (Highlighter, Text Box, Sticky Note, Pen Tool).
  4. Apply Annotations: Click and drag to highlight text, draw shapes, or type notes directly onto the page.
  5. Save Changes: Periodically save your document to retain all annotations.

Web-Based PDF Editors for Real-time Engagement

Online PDF editors provide unparalleled convenience and accessibility, making them perfect for quick annotations during live online lectures or when collaborating. They eliminate the need for software installation and allow you to access your work from any internet-connected device.

Advantages

Disadvantages

Step-by-Step Usage General Workflow

  1. Open Browser: Navigate to an online PDF editor (e.g., PDFjin, Smallpdf, Sejda). Many platforms allow you to easily edit your PDF documents online without software installation.
  2. Upload PDF: Drag and drop your PDF file into the designated area or select it from your device/cloud storage.
  3. Utilize Tools: Use the provided toolbar to highlight text, add comments, insert shapes, or type directly onto the document.
  4. Download or Save: Once finished, download the annotated PDF to your device or save it directly to cloud storage.

Essential Annotation Tools

Regardless of your chosen platform, certain annotation tools are indispensable for effective learning. Familiarity with these features will significantly enhance your study habits.

Managing Annotated PDFs

After annotating, proper file management is key. Always save your work, preferably with a descriptive filename indicating it's an annotated version. If your annotated files become large, especially after extensive drawing or embedded media, you might need to compress the PDF file to reduce its size for easy sharing or upload to learning management systems.

Choosing Your Annotation Method

The best method depends on your specific needs during online classes. Consider whether you need constant internet access, the complexity of your annotation tasks, and your budget.

Feature Desktop Software Web-Based Editor
Accessibility Device-specific installation Any browser, any device
Internet Required No for core functions Yes, generally
Performance High, especially for large files Can vary with internet speed
Cost Often paid, free basic viewers Free options, paid for advanced features
Cloud Integration Manual or via third-party sync Often built-in

For quick, efficient, and accessible PDF annotation directly in your browser during online classes, consider using an online tool. It simplifies the process by letting you instantly upload, mark up, and download your documents without any software installation.