Last updated on
Sep 19, 2025
Add Lines to PDF Document Online For Free
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Discover the simplicity of processing PDFs online
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Fill out, edit, or eSign your PDF hassle-free
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Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Every PDF tool you need to get documents done paper-free
Create & edit PDFs
Generate new PDFs from scratch or transform existing documents into reusable templates. Type anywhere on a PDF, rewrite original PDF content, insert images or graphics, redact sensitive details, and highlight important information using an intuitive online editor.
Fill out & sign PDF forms
Say goodbye to error-prone manual hassles. Complete any PDF document electronically – even while on the go. Pre-fill multiple PDFs simultaneously or extract responses from completed forms with ease.
Organize & convert PDFs
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.
Collect data and approvals
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.
Export documents with ease
Share, email, print, fax, or download edited documents in just a few clicks. Quickly export and import documents from popular cloud storage services like Google Drive, Box, and Dropbox.
Store documents safely
Store an unlimited number of documents and templates securely in the cloud and access them from any location or device. Add an extra level of protection to documents by locking them with a password, placing them in encrypted folders, or requesting user authentication.
Customer trust by the numbers
64M+
users worldwide
4.6/5
average user rating
4M
PDFs edited per month
9 min
average to create and edit a PDF
Join 64+ million people using paperless workflows to drive productivity and cut costs
Why choose our PDF solution?
Cloud-native PDF editor
Access powerful PDF tools, as well as your documents and templates, from anywhere. No installation needed.
Top-rated for ease of use
Create, edit, and fill out PDF documents faster with an intuitive UI that only takes minutes to master.
Industry-leading customer service
Enjoy peace of mind with an award-winning customer support team always within reach.
What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
Really good, not sure how I would be at editing large amounts of info on a PDF with the website but I could be surprised if I went through the online training.
2017-01-20
This program has been a life saver but...
This program has been a life saver and a game changer as a secretary who sends out a lot of documents to families. There are a couple frustrations I've run into though.
The auto line up feature when adding text boxes or checkboxes can be an annoyance because a lot of things don't need to be lined up and therefore causes it to be slightly off of exactly where I need to place it. I'm not sure if that's a feature I can turn off so it could just be user error.
My biggest wish is that I was able to size multiple text boxes to varying sizes and then combine them as a whole text box but keep the sizes of the boxes.
Some of the forms I am editing have 3 or 4 rows of lines for a short answer but the first line is shorter than the rest. So expanding the text box to have multiple lines available just wouldn't work because it's always a perfect rectangle.
2024-11-13
This is a very handy tool
This is a very handy tool, the only problem is the price, you could give a discount for students or something, otherwise a very lifesaving thing.
2024-06-14
I LOVE THIS PROGRAM
I LOVE THIS PROGRAM ! It makes your paperwork look far more proffessional than hand writing these forms. I really recommend anybody using this for their fillable forms
2022-08-09
it did what l wanted it to do. i was not aware this kind of software existed until pdf filler. if l do this kind of job regularly l will use Pdf filler
2022-05-04
What do you like best?
I like that making forms fillable is super easy and that the platform is affordable
What do you dislike?
pdfIller can be a little confusing to use, so it isn't necessarily intuitive when I'm trying to find my docs that I created versus the filled out ones that come to me
What problems are you solving with the product? What benefits have you realized?
getting forms signed remotely!
2020-08-21
What do you like best?
I like that all certificates on Insurance are in the same place, easy to find and I like the ability to duplicate certs
What do you dislike?
Can't find new documents very easily on the program
What problems are you solving with the product? What benefits have you realized?
It a one stop for get our certificates out to our insured, I like that we can now email and fax from the site
2020-08-12
Ryan on the Support Team was extremely helpful and patient. He walked me through all of the steps to complete the form to my satisfaction. Thank you Ryan for teaching me!
2020-05-21
The customer support is outstanding
The customer support at pdfFiller is outstanding. They responded quickly, were incredibly kind, and handled everything with great professionalism. It’s clear they truly care about their users. Highly recommended!
2025-05-25
Add Lines to PDF Document Feature
Our Add Lines to PDF Document feature is a game-changer for enhancing your PDF files with ease and precision.
Key Features:
Effortlessly add lines to any part of your PDF document
Customize the color, thickness, and style of the lines
Easily adjust the position and length of the lines
Potential Use Cases and Benefits:
Highlight important information in reports or presentations
Create visual guides for filling out forms or contracts
Improve readability and organization of documents
With our Add Lines to PDF Document feature, you can now enhance your PDF files with professional-looking lines that grab attention and make information stand out. Say goodbye to messy annotations and hello to clean, precise lines that elevate the overall appearance of your documents.
How to Use the Add Lines to PDF Document Feature
The Add Lines to PDF Document feature in pdfFiller allows you to easily insert lines into your PDF files. Follow these simple steps to use this feature:
01
Open the PDF Document
02
Click on the 'Add Lines' Tool
03
Choose the Line Type
04
Adjust the Line Properties
05
Position and Draw the Line
06
Save and Download the Modified PDF
By following these steps, you'll be able to add lines to your PDF document effortlessly.
Did you know?
The editing tools in the Markup toolbar are ideal for collaborating. Use the tools to provide feedback or write down something you want to remember. You can change the redaction as you edit, but once you close the document, it becomes permanent. The tool may appear highlighted to show your device without using it.
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
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 add lines in PDF?
To add 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 add 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.
Can I insert lines into PDF?
Yes, you can insert multiple lines into PDF documents using pdfFiller. To insert lines 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 add 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 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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