Annotate PDF for Free

Annotate PDF for free by uploading a PDF file, select the highlight color and mark the content or add the text on the file.

Easy and User-friendly

The online PDF editor can work without any effort. When it comes to annotating interface, you can easily figure out how each tool works.

Support All Systems

You can edit and annotate PDF on Windows, Mac, Android as well as iOS devices.

Quick PDF Annotation

It only takes a few seconds to complete PDF annotation, and the function is cloud based.

Safely Annotate Files

All uploaded files are processed automatically by our system. They are 100% secure and no one can access to them.

No Ads & No Virus

The website ensures great user experience so it doesn't add any annoying ads to distract your work.

How to Annotate PDF for Free