It only takes a few clicks to Underline PDF in Microsoft’s mobile OS For Free
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Transform static documents into interactive fillable forms by dragging and dropping various types of fillable fields on your PDFs. Publish these forms on websites or share them via a direct link to capture data, collect signatures, and request payments.

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It's excellent! Saw Vadim talk when @ TS Boston and switched over from docusign. Personally think that everything about pdffiller is better and would never go back. Highly recommend pdffiller to all of my friends.
2015-09-08
I like that you can edit a document as well as sign it! Also you can add signatures afterwards if you forgot the first time!Easy to use and a nice set out.
2020-03-31
This has been an absolute time saver…
This has been an absolute time saver for complete differet typs of fire alarm reports from different forms and jurisdictions. I can't say how grateful I am for this service!
2020-03-02
I can edit PDF documents easily
What I like most about PDFfiller is the ease of use. I appreciate the program design to edit PDF documents without scanning or printing. It looks great.
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2018-07-10
It is super easy to use and most…
It is super easy to use and most importantly, financially accessible. I hope your features only improve, if not remain stagnant. I love you.
2024-10-30
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2022-07-12
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2021-08-06
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2021-05-31
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This service is fantastic and I have not had a moments problem since subscribing and is well more the price. It has saved me countless hours hand filling out documents.
2020-10-01
Underline PDF: Your Essential Tool for Document Management on Microsoft Mobile
Underline PDF enhances your ability to work with PDF documents directly from your Microsoft mobile device. Streamline your workflow by easily highlighting key information, adding notes, and engaging with your documents like never before.
Key Features
Highlight important text effortlessly
Add comments and notes for clarity
Save and share your annotated PDFs
Organize documents with tags for easy retrieval
User-friendly interface tailored for mobile screens
Potential Use Cases and Benefits
Students can annotate lecture notes and readings on-the-go
Professionals can review contracts and add feedback quickly
Researchers can highlight key findings and share insights
Project managers can organize and track important documents over time
With Underline PDF, you address common document management challenges. You will eliminate the need for cumbersome desktop solutions. Instead, you can engage with your PDFs actively and efficiently, no matter where you are. Experience more control over your documents and improve your productivity today.
For pdfFiller’s FAQs
Below is a list of the most common customer questions. If you can’t find an answer to your question, please don’t hesitate to reach out to us.
What if I have more questions?
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How do you mark up a PDF on Android?
Step 2: Click on the 'Open File' button to open PDF files to the PDF annotator. Step 3: Go to the 'Comment' tab and select markup tools to annotate your PDF file. There are several annotate tools, such as highlight, strikethrough, shapes, pencil, sticky notes, stamps and more.
How do I mark a PDF on my phone?
Tap the Navigate icon and then scroll up, down, left, or right to navigate your way through the PDF to the place where you want to make your markups. Tap and hold the Pen icon to select either the Pen or Highlighter option. This allows you to draw or write freehand, with a Pencil or stylus, or your fingertip.
How can I marker a PDF in Mobile?
Tap and hold the Pen icon to select either the Pen or Highlighter option. This allows you to draw or write freehand, with a Pencil or stylus, or your fingertip.
How do I mark a PDF on Android?
Write on PDFs on an Android device. Select Files on the bottom menu bar to locate and open your PDF. Enable editing mode by selecting the big blue Tools icon in the lower right corner, then select Comment. Select the Add Text tool from the bottom menu bar and type your text into the appropriate location.
How do you underline in Microsoft Edge PDF?
In order to enable the feature, please perform these steps. Open Microsoft Edge. Search for Enable Text Highlights for PDF flag. Change it to Enable. Restart Edge and open a PDF document in Edge. Select the text and right click to select Highlights. Choose the color that you prefer.
How do I mark up a PDF in Microsoft Edge?
To access the inking feature on Microsoft Edge for PDF files follow the steps mentioned below: Open a PDF file with Microsoft Edge. Just below the address bar you will see a toolbar with Draw and Erase options. Select the Draw option to start writing on the PDF file.
Video instructions on how to Underline PDF on Microsoft’s mobile OS
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