Last updated on
Sep 19, 2025
Add Lines to PDF Document Online For 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.
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.
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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
I stumbled onto this software product because I needed to redo a 2012 - 1099 form. Since then, I've used it for other forms and I LOVE THE SOFTWARE!! I can't tell enough other people how great it is.
2014-08-05
EXCELLENT. WOULD LIKE TO HAVE THE UNAVAILABLE FEATURES SHADED GREY. AND NOT VIEWED AS ABLE TO USE, AND THEN FIND OUT I HAVE TO "UPGRADE" TO NEXT LEVEL TO USE. THAT BECOMES ANNOYING A MAKES ME USE PRODUCT LESS
2017-04-11
I was very impressed with all the option that were readily available to me. The library was amazing, and aside from business I found things for my children, as well.
2018-12-18
I really like this app
I really like this app! Super easy to use, reliable and efficient.Also, comes very handy in this darker times we are living because signing documents (for example) as never been easier.
2020-04-15
My county require residential construction plans modified to meet 140 mph wind standards. I was unable to reach my building designer. I was able to cut and paste drawings from the manual that I hope will meet their standards.
2024-05-19
Very useful program and easy to use
I found pdfFiller online to work with my Chrome browser for work-related documents. I have found it easy to use right away and so far it seems to handle all I need it for.
2023-08-13
I like the professional government…
I like the professional government templates available but the layout of the actual site is a little tricky to understand how everything works on it.
2023-03-09
I have thoroughly enjoyed using PDF…
I have thoroughly enjoyed using PDF filler. It has been very beneficial when I receive PDF files that I must fill-in or create.
2021-05-27
It took a like while for me to figure out how to do...
It took a like while for me to figure out how to do what I wanted to do. But once I did, I was able to create the doc I needed. The part I liked best was the guidelines to put the fillable boxes in line with the other boxes in the document.
2020-06-05
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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