Annotate PDFs online in Linux.

Whether you’re using Linux, macOS, or Windows, easily annotate your PDFs online.

PDFs are designed to retain document integrity — formatting, fonts, layout — across any program or computer operating system. But PDFs are anything but rigid. With online editing technology, you can easily comment, mark up, draw on, reorganize, merge, annotate, and share any PDF document, across any operating system — be it Linux, macOS, or Windows. Learn how to use Adobe Acrobat to easily annotate and collaborate on your PDFs.

How to annotate a PDF online.

Collecting, organizing, and sharing feedback is never fun. So why not make the process as painless as possible? With online PDF editing tools, you can easily share PDFs, collect feedback, and finalize your documents — across teammates and operating systems.

Open Acrobat’s online PDF editing tool and follow these simple steps to edit, mark, save, and share your PDF:

  1. Upload or drag and drop your files into the online tool.
  2. Sign in to add your comments and annotations.
  3. Use annotation features like Sticky Notes for text comments, as well as visual markups like highlights, strike-throughs, or shapes. With every mark you make, Acrobat allows you to add a comment as well, so you’ll get an easily readable combination of annotations and clarifying comments.
  4. Download your annotated PDF or get a link to share it.

Unlock your PDF potential.

Whether you’re merging, splitting, editing, annotating, signing, or sharing them, discover the PDF possibilities with Acrobat and Acrobat online services.