Annotate PDF files online
If you do not want to install any software or if you need an online tool to annotate PDF files quickly, then the corresponding tool in the PDF24 online toolbox is the right one for you. PDF24 offers you various free online PDF tools with which you can easily solve many PDF problems and with one of the tools you can annotate PDF files. That's how it works:
- Simply open the app with the link below.
- Drag the PDF file you want to comment into the file box.
- The file is loaded and displayed.
- Now you can get started. You have many possibilities to comment. You can:
- Highlight text
- Writing and painting in the PDF
- Insert text with formatting
- Insert images and shapes
- Set opacity and colors of the elements
- Removing added items
- And much more
- Then save your PDF when you're done commenting.
With a tablet and a pen, you can easily annotate and edit a PDF. It feels almost like using a pen and paper, but electronically. The app is free and can be used by everyone.