Home
Functionality index

Switch from Nitro to pdfFiller for a Underline In PDF Online Solution For Free

Use pdfFiller instead of Nitro to fill out forms and edit PDF documents online. Get a comprehensive PDF toolkit at the most competitive price.

Drop document here to upload

Select from device

Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT

Note: Integration described on this webpage may temporarily not be available.

0

Forms filled

0

Forms signed

0

Forms sent

Discover the simplicity of processing PDFs online

Upload your document in seconds

Fill out, edit, or eSign your PDF hassle-free

Download, export, or share your edited file instantly

Switch from Nitro to pdfFiller in 4 simple steps

1

Sign up for free using your email, Google, or Facebook account.

2

Upload a PDF from your device or cloud storage, check the online library for the form you need, or create a document from scratch.

3

Edit, annotate, redact, or eSign your PDF online in seconds.

4

Share your document, download it in your preferred format, or save it as a template.

Experience effortless PDF management with the best alternative to Nitro

Create and edit PDFs

Instantly customize your PDFs any way you want, or start fresh with a new document.

Fill out PDF forms

Stop spending hours doing forms by hand. Complete your tax reporting and other paperwork fast and error-free.

Build fillable documents

Add fillable fields to your PDFs and share your forms with ease to collect accurate data.

Save reusable templates

Reclaim working hours by generating new documents with reusable pre-made templates.

Get eSignatures done

Forget about printing and mailing documents for signature. Sign your PDFs or request signatures in a few clicks.

Convert files

Say goodbye to unreliable third-party file converters. Save your files in various formats right in pdfFiller.

Securely store documents

Keep all your documents in one place without exposing your sensitive data.

Organize your PDFs

Merge, split, and rearrange the pages of your PDFs in any order.

Customer trust proven by figures

pdfFiller is proud of its massive user base and is committed to delivering the greatest possible experience and value to each customer.

740K

active users

239

countries

75K

new subscribers per month

105K

user reviews on trusted platforms

420

fortune 500 companies

4.6/5

average user rating

Get started with
an all‑in‑one PDF software

Save up to 40 hours per month with paper-free processes

Make quick changes to your PDFs even while on the go

Streamline approvals, teamwork, and document sharing

Start free trial

G2 recognizes pdfFiller as one of the best tools to power your paperless office

4.6/5

— from 710 reviews

Instructions and Help about Switch from Nitro to pdfFiller for a Underline In PDF Online Solution For Free

Did you ever need to underline or cross out text in PDF documents?

In the past, you probably had to print the document, underline words or phrases with a pen, and either scan the document or send a hard copy to wherever it needed to go. Besides needing a printer and a scanner, the process probably took you far too much time to complete.

Now there is a far easier way to underline text in PDF documents. You can simply use pdfFiller!

To get started, upload a document to your account and open it in the editor. To draw a line, click the Line icon in the main toolbar. The line toolbar will appear under the editing tools. Click where you want to create the start point and drag to where you want to create the end point, release the mouse button and click OK.

To change the line’s color, click on the black square and choose the color you want. Use the slider before or after drawing a line to change its thickness. You can change the position of the line ends by dragging them. Finally, you can always delete any line you've drawn, just select it and click the trash can icon that will appear.

To learn more about drawing lines in PDF documents online, please watch the following video:

When you use pdfFiller to underline text in PDF documents, you do not use paper, pencils, fax, and printer. And even better, you save yourself a lot of time! If you like being able to underline text in PDF documents online, you might be interested in a lot of other great features that pdfFiller has to offer including highlighting and erasing content, adding pictures, text boxes and sticky notes, and creating fillable fields. Check out these tutorials to see the other great things that pdfFiller can do for you!

01

To underline content in a PDF, upload your PDF document using pdfFiller's uploader.

02

Choose the 'Line' button in the 'Tools' tab and draw a line. You can drag and move the line anywhere in your document.

03

You can also click the 'Tools' tab and highlight, redact or erase text and images in your PDF.

04

When you're done with editing, click the 'Done' button and email, print or save your document.

pdfFiller is different from and not affiliated with Nitro. With further questions about Nitro products please contact Nitro directly.

Our user reviews speak for themselves

Read more or give pdfFiller a try to experience the benefits for yourself

5.0

Awesome, Love it. It is a good thing because I just didn't know they would charge me 9.00 dollars a month all at one time for the whole year upfront... Thanks for the heads up guys.

Darrell F F

5.0

Easy to use. Helpful Support staff. I sent them a link to a document that I needed added and they had it available within minutes of sending it to them:)

Melanie

Get documents done
from anywhere

Create, edit, and share PDFs even on the go. The pdfFiller app equips you with every tool you need to manage documents on your mobile device. Try it now on iOS or Android!

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?

Contact Support

How to draw a straight line in PDF?

How to draw lines in PDF. In Acrobat, Click the Tools tab, then click Comment. Click the Drawing Tools and select Line. From here, you can go to your document and draw a line. To make your line straight, press the Shift key and draw your line.

How to edit text in PDF using Nitro Pro?

Click the Edit button located on the left-hand side of the ribbon. Click into the text, and position the cursor where you want to insert or edit text. Highlighting text with your mouse reveals the floating toolbar that allows you to change the font, case, color, and size of the text.

How to underline in Nitro PDF?

Let's get started nitro pdf pro has a range of tools to assist with commenting and reviewing yourMoreLet's get started nitro pdf pro has a range of tools to assist with commenting and reviewing your documents making proof reading and collaboration easy to highlight text either go to the tools menu

How to edit a PDF file in Nitro Pro?

As you add or delete. Text the bounding boxes automatically resizes itself to make the changes underMoreAs you add or delete. Text the bounding boxes automatically resizes itself to make the changes under the format tab you can choose whether you'd like to edit a whole paragraph or individual lines.

How do I add a text field in Nitro PDF?

How to add a text field: Open the PDF in Nitro Pro. On the Forms ribbon, in the Form Fields group, click Text Field. On the page, drag the pointer where you want the field to appear. Double-click or right-click on the field and do one of the following (depending on your preferences): Do either of the following:

How do I add a line in Nitro PDF?

Line Click the down arrow next to the Draw button. in the Toolbar to reveal the tools. Select the Line tool. (turns gray when selected). Click and drag to create a line.

How do I add underline in a PDF?

Open a PDF file and select the Annotate tab. Select the Highlight , Underline , or Strikeout tool. Choose the color for each tool on the sidebar on the right. In the underline tool, you can also switch between a squiggle and a straight line there.

How do I insert a shape in Nitro PDF?

On the Review tab, in the Review Tools group, click the arrow below Shapes, and select a type of shape to insert. Click the desired location on the PDF page to place the drawing shape.

Join 64+ million people using paperless workflows to drive productivity and cut costs

Start free trial