Add Lines to PDF Document Online For Free

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Discover the simplicity of processing PDFs online

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Upload your document in seconds
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Fill out, edit, or eSign your PDF hassle-free
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Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025

Every PDF tool you need to get documents
done paper-free

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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.
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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.
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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.
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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.
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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.
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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:
Amazing software except for the licensing. I just want to pay for when I need it. For a business the month to month is great, but for a single time user it is a bit tougher.
Fernando G
2015-03-05
I needed on copy of a form, that is all and I was charged 120.00, that is an expensive copy. I have cancelled your service and would appreciate a full refund. Charge me for one copy fine, but not 120.00. Thank you
Carol H
2017-07-14
I really enjoy PDF filler. It is way more user friendly than Adobe Pro and it is so convenient for it to be a website that I can access from anywhere. Who ever created this is a genius!!!!!!!!!!!!
T Jones
2017-09-21
What do you like best?
Easy to use and understand. Able to save changes easily.
What do you dislike?
wish there was more edit coloring options
Recommendations to others considering the product:
yes
What problems are you solving with the product? What benefits have you realized?
editing floor plan
User in Semiconductors
2019-02-25
What do you like best?
PDF filler is very user-friendly. My favorite features are that it saves your docs. This makes it easy to keep editing docs that you use over and over. Also, when you use the erase feature, it keeps the eraser on the same line, which I could never do on my own! At the end, you can download the whole doc, or individual pages, this feature really helps and saves time on splitting the document with other programs.
What do you dislike?
Once docs are ready, the loading time to save can sometimes feel slow. Also, uploading the docs can sometimes feel slow. This is not a deal breaker, but perhaps something that can be worked on. I think there should also be a feature where you can upload docs one after the other for the same session, and it will merge the docs (or ask if you want to) and edit them together. It seems right now we have to edit each separate if they are not already joined, save them, and then go to another program to merge.
Recommendations to others considering the product:
Have an option to merge docs, make speeds quicker.
What problems are you solving with the product? What benefits have you realized?
When I get contracts, most of the time they are not complete to be approved. This allows me to add extra details and even sign the docs. I like the stamp it adds to show when the signature was made.
Consultant in Construction
2019-05-21
Say yes to PDFfiller. I was able to take a 30+ page PDF file, highlight areas of significance, add sticky notes and/or note boxes where I needed to remember a particular point in the lengthy document filled with legal jargon. Which made things SO much easier for me. Although I have listed a few things that I wish were different, overall the product is a great one. I had one difficult experience with a file, but otherwise everything has been amazing. I would absolutely recommend PDFfiller to anyone needing the tools it offers. I had never used a PDF editor before. Simply due to the fact that I had a hard time finding one that wasn't trying to charge me a bunch of money up front. PDFfiller gave me a free 30-day trial. Which is an instant gold star in my books. Aside from the willingness to let it's potential customers try the product out, the product is surprisingly easy to navigate through, and I was able to download a copy of my final product free with the trial. There are two things that I would change if I could. The first thing that I did not care for is honestly just one of those particulars that I would have like to have the option of. That being that the only highlighting option is yellow. While this is not really a big deal, it would be really nice to have the option to select different highlighting options (pink,green,orange,blue,etc.). As a college student, I handle a LOT of PDF files on a weekly basis. Anything from a single page reference list, to a PDF copy of a book that consists of hundreds of pages. For me, color coding highlighted areas makes research points easier to decipher and organize according to relevance to one another. The one thing that I noticed was a bit of a headache to deal with. I uploaded a file that needed updating. I selected a entry point that needed to be changed, and the font size automatically changed from an 8.5 to a 9. I selected the "text size down" option, and it made it a size 8. There is no option to size it back to an 8.5. This created an abnormal look to the line of text, and one or more words were different in size. I would have to go through and individually adjust everything to the same size. This may be a subtle difference in size, but as a Graduate student, these things matter in the grading process.
Elyzabeth S.
2019-09-16
I choose pdf filler for it's fill & print ability, plus it's option to look up Texas forms! I've been very satisfied with everything on your website up to this point & would recommend it to others to give it a whirl!!
CAMoore
2022-08-05
the erase feature should be slightly… the erase feature should be slightly work on, like we being able to completely erase elements and not just shading it with colors.
finley beach
2022-03-11
best customer service I've experienced Software works good, had no problem at all. The customer service was top notch. They helped resolve my account problems within the first hour I sent out the form. Polite and efficient. The excellent service provided was the last and fith star.
ye
2021-10-21

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.

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!

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?

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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
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.
pdfFiller.com supports Internet Exporter (IE), Google Chrome, and Mozilla Firefox.
No downloads needed! pdfFiller.com is web-based application that does not need any additional software. pdfFiller.com supports any browser.
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.
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.
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.
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.
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.
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.
To write on a document, click anywhere on the document and begin typing.
Yes. Just use “Enter” to create a line break. You can also paste large chunks of text and use Enter to restructure the lines.
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.

#1 usability according to G2

Try the PDF solution that respects your time.
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025