Underline In PDF Online For Free
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Add, remove, or rearrange pages inside your PDFs in seconds. Create new documents by merging or splitting PDFs. Instantly convert edited files to various formats when you download or export them.

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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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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
I like the idea that I can go back and fill in the parts of a report that I couldn't finish in one sitting. This will a big help to me in my newly appointed position.
2015-04-23
I'm so glad that I found with service. It makes getting paperwork completed without leaving the office. I signed up to use if for free. You only get a couple of free times to use the service. Then you have to pay for your account. I paid for it mainly because I can use it anytime I want to. No Stress of whether or not it's going to work or be correct. It Always Is Both.
2016-07-01
A bit difficult to navigate…
A bit difficult to navigate through/enter updates unless you use this on a regular basis. Once the memory kicks in, it's a GREAT tool for making easy changes/adding necessary information.
2020-01-21
Pdffiller review
Everything is alright, and serves my needs.
Good value-for-money fairly easy to use.
Cannot easily find all the forms that I want to use. And some I believe are not available.
2019-03-12
*** was very helpful in retreiving my lost infor and reconnecting me to my "filler" account. He was friendly informative and thorough. Great job many Thanks!
2023-07-18
I am not the most skilled with modern technology. As a startup NFP we don’t have the financial capacity to either hire, or contract with an accounting professional to prepare our year end 990s. I personally took it upon myself to do the necessary paperwork. I kept losing my work, and did not know how to save it without Word. I stumbled upon pdfFiller and decided to sign up. The retrieval and storage of my docs (either completed or still being worked on) is so simple now that even I can do it! The work has become easier thanks to pdfFiller. Thank you.
Matt
2023-06-07
What do you like best?
I dont have to use photoshop anymore or print anything out
What do you dislike?
Having to keep logging in, it always signs me out
What problems are you solving with the product? What benefits have you realized?
Separating PDFs, making corrections
2022-02-02
I START TO KNOW ABOUT THIS WORK IN THIS WEEK AND IS MY SECOND USE THE POS, SO I LEARN SO MUTCH ABOUT THE SYSTEM BUT WITH THE HARD HELP WITH SUPPORT BUT NOW I LIKE TO DO THIS WORK, EVERY LEARN MORE AND MORE, AND NOW IS MORE EASY TO FIND A SOLUCIONS ABOUT PROBLEMS.
2021-10-28
I signed up originally to utilise this service. Whilst I did not wish to continue with the service (just wouldnt need it again) I did struggle to cancel the service. I sent an email outlining my issue and got the quickest response back and my account fixed and funds returned. Great service if you do require all the time. Easy to use. Highly recommend.
2020-07-25
Underline In PDF Feature
Welcome to our new Underline In PDF feature, designed to make your PDF editing experience even better!
Key Features:
Easily underline text in your PDF documents
Choose from a variety of colors and thickness for the underline
Undo and redo options for precise editing
Potential Use Cases and Benefits:
Highlight important information in reports and presentations
Mark key points in study materials for quick reference
Annotate documents for collaboration and feedback
With our Underline In PDF feature, you can effortlessly emphasize crucial details and enhance the readability of your documents. Say goodbye to the hassle of printing and manually underlining text - streamline your workflow and impress your audience with clear and impactful PDFs!
How to Use the Underline In PDF Feature
The Underline In PDF feature in pdfFiller allows you to easily underline text in your PDF documents. Follow these simple steps to use this feature:
01
Open the PDF document you want to edit in pdfFiller.
02
Click on the 'Text' button in the toolbar at the top of the page.
03
Select the text you want to underline by clicking and dragging your cursor over it.
04
Once the text is selected, a formatting toolbar will appear above it.
05
Click on the 'Underline' button in the formatting toolbar.
06
The selected text will now be underlined.
07
To remove the underline, simply click on the 'Underline' button again.
That's it! You have successfully used the Underline In PDF feature in pdfFiller. Enjoy editing your PDF documents with ease!
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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What is pdfFiller?
pdfFiller is a web-based PDF editor. With pdfFiller, you can search for, edit, store and export PDF documents online without downloading and installing any software. pdfFiller also allows you to access and modify your PDF documents from any device anytime.
What browsers do pdfFiller.com support?
pdfFiller.com supports Internet Exporter (IE), Google Chrome, and Mozilla Firefox.
Do I need to download or install any software?
No downloads needed! pdfFiller.com is web-based application that does not need any additional software. pdfFiller.com supports any browser.
Can I edit a PDF document online?
Yes. pdfFiller.com allows you to edit (modify, alter, correct, change, amend, revise, redact) any document with our various tools and features. You can rearrange, rotate, and delete, the pages. You can also, add text, images, and signatures to each page.
How to annotate PDFs?
To annotate PDF documents, upload your document to pdfFiller, or choose the document your want to annotate in “My Forms” page and click “Fill” button. Open “Draw” tab and access the editor toolbar, you can have a variety of annotation features: highlight text, add comments, underline text and insert sticky notes or arrows.
How to underline in PDF?
To underline in PDF documents, upload your PDF documents to pdfFiller, or choose the PDF you'd like to annotate in “My Forms” page and click “Fill” button on the right. You can find the “Line” button in “Tools” tab. Select the area or sentence you'd like to underline by clicking and holding the button on the mouse to draw a line around. Release the mouse when you're done. You can change the size of the line using the editor toolbar.
Can I underline into PDF?
Yes, you can insert multiple lines into PDF documents using pdfFiller. To underline into PDF documents, upload your PDF documents to pdfFiller, or choose the PDF you'd like to annotate in “My Forms” page and click “Fill” button on the right. You can find the “Line” button in “Tools” tab. Select the area or sentence you'd like to underline by clicking and holding the button on the mouse to draw a line around. Release the mouse when you're done. You can change the size of the line using the editor toolbar.
How to underline text in PDF certificate form?
To underline text in PDF forms, upload your PDF documents to pdfFiller, or choose the PDF you'd like to annotate in “My Forms” page and click “Fill” button on the right. You can find the “Line” button in “Tools” tab. Select the area or sentence you'd like to underline by clicking and holding the button on the mouse to draw a line around. Release the mouse when you're done. You can change the size of the line using the editor toolbar.
What PDF editor can draw a line to PDF forms?
pdfFiller can help you draw a line to any PDF document online. To draw lines in PDF documents, upload your PDF documents to pdfFiller, or choose the PDF you'd like to annotate in “My Forms” page and click “Fill” button on the right. You can find the “Line” button in “Tools” tab. Select the area or sentence you'd like to draw lines by clicking and holding the button on the mouse to draw a line around. Release the mouse when you're done. You can change the size of the line using the editor toolbar.
How do I write on a document?
To write on a document, click anywhere on the document and begin typing.
Can I type multiple lines when I have a lot of text?
Yes. Just use “Enter” to create a line break. You can also paste large chunks of text and use Enter to restructure the lines.
How do I edit font settings?
To edit font settings, begin by clicking on the “Font” button. You can then change the font type, adjust the size and color. Furthermore, you can also, modify text in to bold, underline, and italics.
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