Home page

Convert from PDF

How to Highlight a PDF Online

Aug 4 2023

Sanity Image
Read time

3.5 min



Annotate PDF

Edit PDF

Read time

3.5 min

Share this post


PDF files have become an essential part of our work and personal life, widely used for various business reports, legal documents, job applications, eBooks, education and so much more.

As a result, the need to review, draw attention to important details, and highlight text in PDF has grown significantly, especially if you're dealing with large and complex documents on a daily basis.

Fortunately, there's a simple and secure PDF highlighter you can use to accomplish such tasks.

This short guide will provide you with easy-to-follow instructions on how to highlight a PDF online with Xodo.

How to Highlight Text in PDF

The process of highlighting text in a PDF using our free PDF highlighter is quite straightforward and can be broken down into five easy steps:

1. Open your PDF with the PDF Annotator tool. 

2. Select the Highlight option in the toolbar.

3. Customize the highlight color and opacity.

4. Add highlights over the desired PDF text.

5. Download your file when you're done.

Highlight text in PDF

Finding and marking key points or quotes in a document with Xodo is as simple as that!

How to Highlight Text in Scanned PDF

Highlighting text in scanned PDFs can be challenging. Since the text in the document is often recognized as an image, this makes it impossible to highlight using standard PDF markup tools.

This is where the free hand highlight tool in Xodo comes in handy as it allows you to manually highlight areas on a scanned document.

Highlight text in scanned PDF

The entire process is the same as for highlighting text in regular PDFs, you just need to select the Free Hand Highlight option from the toolbar and start tracing over the desired areas.

How to remove highlight in PDF

Not happy with what you've highlighted? No problem!

Our free PDF highlighter is a versatile tool that not only allows you to highlight text but also enables you to easily remove added highlights and other annotations.

Easily remove highlights in PDF by selecting them and then clicking on the Delete button from the context menu that shows up or use the Eraser option from the main toolbar.

Highlight text in scanned PDF

The highlighting tool also allows you to change the highlight color to better differentiate between various types of information, and even add comments or links to specific pages or URLs.

Advantages of Xodo PDF Highlighter

So what sets Xodo head and shoulders above the rest? It has the features that cater to every document processing need you’ll have while working online:

  • A simple and intuitive interface to highlight text in PDF, underline, strikethrough and even add personalized notes, making it an ideal tool for students and professionals alike.
  • Xodo provides a high level of security as all highlights and annotations are saved locally on your device, ensuring your sensitive documents stay private and confidential.
  • 30+ other document processing tools available to convert to and from PDF, edit PDF, and more.
  • Cross-platform access, enabling you to highlight and annotate PDF wherever you are, on the web, iOS, Android, and Windows.

Adding Other Annotations to PDF

Xodo provides a variety of other tools you can use to review and annotate your PDFs. You can add comments, notes, images, stamps, attachments, callouts, and even fill out and sign your forms online.

You can also markup your PDF text with underline, squiggly, and strikethrough options. Additionally, Xodo allows you to insert lines, arrows, various other shapes, and measure distance and areas if needed.

Simply click on View, Annotate, Shapes, Insert, Measure or Fill and Sign options at the top of the toolbar to access and use all the options available to you.

Get Your Work Done Faster with Xodo

From highlighting text in PDF to adding different markups and annotations, Xodo is perfect for students, educators, professionals, or anyone who regularly works with PDF documents.

It’s not just a PDF highlighter but a feature-rich tool that lets you edit, annotate, sign and fill out, convert to and from PDF online on any device.

So, why wait? Enjoy a smoother and more organized PDF reviewing and annotating experience. 

Try out everything Xodo Pro has to offer without limits with a 7-day free trial.

Start Free Trial Now
Sanity Image

Reena Cruz

PDF Productivity Expert

Share this post


Related Articles

Sanity Image

How to Edit PDF Text

With Xodo, you can easily update, edit and format PDF text with confidence. Make on the spot edits to text, paragraphs, and their formatting Xodo. We’ll show you how to make quick changes to your PDF text, boosting your PDF editing productivity. Check out our post!

Sanity Image

How to Edit a PDF

Discover the powerful PDF editing capabilities of Xodo. From seamless page editing to effortless annotation additions, you can edit your PDFs online like never before. Start redefining your PDF editing workflow with Xodo. Our post shows you how.

Sanity Image

How to Rotate PDF Pages

Stuck with upside-down and improperly oriented PDF pages? Don't worry! We'll walk you through the simple yet incredibly easy process of how to rotate PDF files. Fix the orientation of your documents in seconds with the help of a few Xodo tools.

Home page


How to Merge PDF Files How to Edit Docx OnlineHow to Convert PDF to PDF/A How to Edit PDF Text


Pricing & PlanXodo SignApps & IntegrationTechnology
powered_by footer.powered_by_short, footer.powered_by_follow_up footer.powered_by_pdf_sdk
Terms of UsePrivacy PolicyHelp us improve XodoContact UsData Processing Agreement