Free PDF Highlighter: All-IN-ONE

Effortlessly edit, annotate, and highlight PDF online and offline, for both text-based and scanned PDFs.

PDF Highlighter Software, with AI-Powered

Comprehensive solution for highlighting, underlining, annotating and editing PDFs across PC, Mac, iPhone, and iPad for free. Additionally, leveraging the power of integrated ChatGPT technology, the PDF chatbot saves your time by enabling you to intelligently analyze and organize your PDF content.

Facilitate Collaborations

The PDFgear for Desktop & Mobile delivers a colorful collaborating experience, while the most precise messages are emphasized and clearly conveyed.

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Highlight Text and Areas

In PDFgear software, two highlighting options are offered for you to flexibly highlight your PDF documents: select and highlight text in PDF, or select and highlight areas in PDF.

Highlighting and More

Aside from highlighting text and areas in PDFs, PDFgear for Desktop & Mobile provides a plethora of annotation options including annotations, comments, electronic signatures, shapes, etc.

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Highlight Scanned PDFs

Highlighting words and sentences in PDF requires you to select text in the document. PDFgear Desktop highlighter is also packed with a powerful OCR tool to make your PDF selectable.

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Hightlight PDFs Online, Free, and without Sign-up

PDFgear Online PDF highlighter allows you to instantly highlight, underline, and annotate your PDF documents online for free and without the need to sign up or create an account.

PDFgear Form Features

Key Features

  • Highlight, underline, strikethrough text in PDFs.
  • Annotate PDF using lines, shapes, and stamps.
  • Add text and comments to your PDF documents.
  • Sign PDF forms with signatures or initials online.
  • Customize forms with text boxes, check boxes, dropdowns.
  • Completely free, no sign-up required, no watermark.
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Tips and Tricks about PDF Highlighting

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3 Easy Ways to Remove Highlight in PDF

This post shows you 3 easy ways to remove highlights from PDFs. You can use PDFgear online or offline for free, or use Adobe Acrobat.

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How to Highlight a PDF on Mac

Learn about the 5 easiest methods to highlight PDF on Mac using various colors, step-by-step instructions and detailed screenshots are offered.

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4 Ways to Change Highlight Color in PDF[Free and Paid Options]

Need to change highlight color in PDF? Discover 4 easy ways to change the highlight color in PDFgear, Adobe Acrobat, Preview, and Foxit.

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Your gateway to endless possibilities!

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Your Questions are

Your Questions are Answered

Why can’t I highlight my PDF?

There are two more probably cases where you can’t highlight your PDF. One is that your PDF document is protected, which means you need to unlock the PDF. And another reason is that the PDF is a scanned document that is unselectable, so you need to use PDF OCR before the highlighting.

Can I change the highlight color?

In the PDFgear Desktop highlighter tool, you can find 60+ color themes to use as the highlighting color or change the existing highlight color to. And aside from the color presets, you can also use the color palette to choose a custom color.

How to change the highlight color in PDF?

To change the existing highlighting color in PDFgear, open the PDF document that you previously highlighted in PDFgear Desktop. From the PDF preview screen, click on the selected highlight text, and choose another color from the upper color schemes.

How to remove highlights in PDF?

To remove the existing highlight color in PDFgear, open the PDF document you highlighted in PDFgear Desktop, select the highlight, right-click on select the highlight, and hit the remove button that pops up.

How to highlight PDFs on Mac?

To highlight PDFs on Mac, open the PDF with Preview. Click on the Highlight button that looks like a drawing crayon, and the highlight colors will be found from the down arrow button. Moreover, for professional users with advanced annotation requirements, you are also suggested to try PDFgear for Mac.

How do I highlight in PDF on mobile phones & tablets?

For a more streamlined experience in highlighting a PDF document on iPhone, iPad, or Android devices, the most convenient option is to use the online PDF highlighter provided by PDFgear. Additionally, if you are using an iPhone or iPad and are seeking more comprehensive PDF editing features, PDFgear for iOS is likely your best option.