• Highlight PDF
  • Notes and Comments
  • Mark Up and Draw
  • Add Stamp
  • Manage Annotations

Highlight PDF Text with Different Colors

  • Make key points stand out with PDF highlighter to ensure they catch the reader's attention and are easily referenced later. Our PDF annotator offers a highlight text feature that allows you to mark important points in your PDF document. It is a great way to emphasize and draw attention to important information.

Add Personalized Notes and Comments

  • Add personalized text annotation, text box, text callout, underline, squiggly line, strikestrough, sticky notes, et. to your PDF document to provide additional context, insights, or feedback. These annotations can serve as reminders, explanations, or discussions to enhance understanding and collaboration among readers, which are quite useful for collaboration purposes.

Mark Up and Draw PDF with Flexibility

  • Unleash your creativity with PDF markup and drawing tools. You can add lines, arrows, circles, etc. to draw attention to specific areas of a document. Or add illustrations, diagrams, handwritten notes, etc. to your PDF with the drawing tools. By adding shapes, drawings and sketches, you can make your PDF document more visually engaging and personalized.

Add Stamp to PDF or Create Stamp from Image

  • Want to stamp PDF to authenticate, identify or protect your PDF documents? Our PDF annotator is here for you. It offers more than 10 preset stamp templates for you to choose. You can also upload JPG, PNG, JPEG, etc. images to create your own stamp to ensure integrity and authenticity of the PDF content.

Manage All PDF Annotations in One Place

  • Whether the annotations are text comments, highlighting, drawings, shapes, stamps, or other elements, you can manage all of them within this PDF annotation software. Get a precise view of all the PDF annotations, revise if needed and privde clear responce to the comments. No matter the PDF is a contract, report, research PDF or project plan, mastering the PDF annotations will sure help improve your efficiency.

How to Annotate PDF in a Few Simple Steps

  • 1


    Open the PDF File

    Click on the "Open" button or navigate to "File" and press "Open" from the dropdown menu. Then, select the PDF file you want to annotate from your computer's storage.

  • 2


    Annotate the PDF

    Go to the "Comment" tab to find all the annotation tools. Select highlight, underline, strikethrough, or any other annotation tool and apply them accordingly.

  • 3


    Save the Annotated PDF

    Once you are satisfied with everything annotated, click on the "Save" button or navigate to "File" and press "Save" from the dropdown menu to save your annotated PDF document.

Other PDF Editing Features You May Like

Free Resources

  • Free PDF Tools
  • Free PDF Templates
  • Free File Converters
Is it possible to undo annotations in a PDF document?

Yes, most of the best PDF annotation tools offer an undo function that enables you to reverse any changes you've made to a document. This function can be useful if you make a mistake or change your mind about an annotation. You can click the undo button or use the keyboard shortcut to undo your last action.

Can I save my annotated PDF as a new file?

Yes, most PDF annotation software allows you to save your annotated document as a new file without altering the original document. This feature is useful if you want to keep a copy of the original document as it is or if you want to share your annotations with others without affecting the original document. You can usually find the "Save As" option in the program's menu, which allows you to save the document under a new name or in a different location.

What are some popular annotation tools available online?

Many annotation tools are available online, such as Adobe Acrobat, Foxit Reader, Nitro PDF, and PDF-XChange Editor. These tools offer various features, including PDF text highlighting, note-taking, commenting, drawing, and form-filling. Some of these tools are free, while others require a subscription or a one-time payment.

Can I collaborate on annotating a PDF document with multiple users?

Yes, there are several ways to collaborate on annotating a PDF document with multiple users. One way is to use a cloud-based service, such as Google Drive or Dropbox, that enables multiple users to share and annotate the same document simultaneously. Another way is to use a collaboration tool, such as Microsoft Teams or Slack, that allows users to share and annotate documents in real-time.

Can I remove annotations from a PDF after they have been added?

Yes, most PDF annotation software allows you to remove annotations from a document after they have been added. You can usually select the annotation you want to remove and delete it using the program's delete or remove function. Some programs also offer an undo function that allows you to reverse any changes you've made to a document.

Are there limitations to the types of PDF files that can be annotated?

Most PDF annotation software can annotate standard PDF files. However, some programs may have limitations when annotating scanned PDFs or PDFs with security settings. For example, some PDFs may be password-protected, preventing users from adding annotations unless they have the password. Similarly, some scanned PDFs may not be editable or searchable, limiting the types of annotations that can be added to the document.

What Do Our Users Say?

“I have been using the PDF Annotation Tool for a few months, making my life much easier. The tool is simple and intuitive to use, and it has all the features I need to annotate my PDF files effectively. I positively recommend this tool to anyone looking for a reliable and easy-to-use PDF Annotation Tutorial and solution.”

Jacob Smith

“The PDF Annotation Tool is a game-changer for me. As a researcher, I need to annotate many PDF files, and this tool has made the process much faster and hassle-free. The tool's highlight, underline, and strikethrough features are especially useful, and the ability to add comments and notes has made collaboration with my colleagues a breeze. I'm extremely satisfied with this tool and highly recommend it.”

Maria Garcia

“I've been using the PDF Annotation Tool for a while now, and it's one of the best PDF annotation tools I've come across. The tool's interface is clean and user-friendly, and the PDF annotation features are comprehensive and easy to use. Moreover, the tool is affordable compared to similar tools in the market. I'm very happy with this tool and recommend it to anyone looking for an excellent PDF annotation solution.”

Robert Brown

AcePDF Editor

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