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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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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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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 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've had problems expanding boxes to fit text in. Customer support sent a YouTube video and that was some help and fixed one box, but then I had problems with a second box and just didn't have the time to keep trying to fix the problem. After a few attempts I was able to fix the problem, and now I am very impressed with the program.
Lindsay F
2018-04-26
overall it is fairly easy to use and it is clear, but it is not straight forward if you want to continue on with the next form, ie when finishing one form 1099 and you wish to do anothe
Merlin
2019-01-09
customer service excellent. removed one star for irritating Watermark and Filler buttons right next to the page scroll bar … way too easy to accidently add them … hence the need to contact support
jennifer
2019-09-07
What do you like best?
EASY TO UPLOAD AND CREATE FORMS. QUICK TO FILL IN FORMS AND GET SIGNATURES FROM PROVIDER'S
What do you dislike?
SOME FORMS CANNOT BE FILLED IN. OR THEY MAY LOOK FAKE.
What problems are you solving with the product? What benefits have you realized?
UPDATING OFFICE FORMS, CREATING NEW FORMS OR FINDING MUCH NEEDED FORMS.
User in Medical Practice
2018-12-20
What do you like best?
I really like that PDFfiller is a very user friendly and employs a lot of the same standard editing tools commonly found in simple office software like Microsoft Word. It's a great step up from the standard Acrobat Reader and also has an easier learning curve than some of the more advanced Adobe PDF products. Being able to sign documents electronically is another strong feature.
What do you dislike?
When I edit a document that has more than one page, I am unable to perform a copy and paste across multiple pages, which is a bit annoying when trying to standardize items across one document. Saving documents is also very easy. We can save the document to any one of my computer folders or a cloud storage account.
Recommendations to others considering the product:
I think that PDFfiller is a very effective and easy-to-use PDF editor and converter. For the price and functionality, it's definitely worth checking out, in my opinion.
What problems are you solving with the product? What benefits have you realized?
Since we often deal with many types of text documents, especially Word documents, PDFfiller has really helped to enable conversions of Word documents to PDF, which are more ideal for certain things like printing. We can also convert PDF files to Word, which greatly reduces our need to perform time-consuming typing. In general, PDFfiller has been a great tool for working with PDF files with its intuitive interface and clear functionality.
Nate Byrne
2019-04-14
Happy User we have accidentally deleted some forms and we couldn't find it, but our overall experience is great easy to create a fillable forms and let our clients to fill need to pay upgrade to get certain function, like just directly download the filled form from my clients
Joanne y.
2019-03-19
Became a notary and I love it! Very easy to use! Has all the tools necessary to get the job done. Not just for notary, even can be used for personal use as well. Amazing!
Vianey V
2021-02-09
What do you like best? Ability to quickly and easily edit PDF's What do you dislike? Sometimes it's difficult to undo changes made. What problems are you solving with the product? What benefits have you realized? I work in real estate and I often need to fill in PDF's with information for my clients. Being able to do in a web based platform makes it easy to do on any computer.
Derek Abbott-Molina, MBA, MPM
2020-08-30
Great service. I thought my subscription had expired but the tech support hooked me back up in a jiffy! I prefer to use PDFfiller program rather than the Acrobat Reader DC program. I will always renew my subscription in the future.
Linda T J.
2020-05-19

Underline PDF in Windows with no compatibility issues

Different platforms have various capabilities when it comes to handling PDFs. For example, Microsoft windows doesn’t have any built-in software for working with them. You can view them in a web browser yet can't make any adjustments. On the other hand, devices running macOS have the program Preview installed by default. It makes it easy to highlight text, insert text boxes and shapes, and even a signature, but in any case, regardless of an operating system you use, you still need a professional software to manage PDFs. If you would like to Underline PDF in Windows and complete other document management tasks, pdfFiller is the option both individuals and businesses alike turn to. It really is web-based, so you can access it from any browser. Free yourself from OS restrictions. Our solution works well on Microsoft, macOS, Linux, iOS, Android, and other popular operating systems.

Why should you choose to Underline PDF in Windows in a web browser:

01
Simplicity. Start editing PDFs like a pro without tutorials. The interface is user friendly and straightforward.
02
Flexibility. Stop worrying about compatibility issues. The tool works well on all major platforms.
03
Security. Feel safe with bank-level security and compliance. The data uploaded and added is secured with advanced encryption methods.
04
Validity. Utilize legally-binding eSignatures. The eSignatures created in pdfFiller can be used in court.
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Integrity. Combine the PDF editor with a wide variety of available clouds, CRM systems, or databases. The vast number of cloud storages available makes moving documents fast.

Improve document management-related processes with the right tools and features with our app. Improve your workflows today!

Underline PDF for Windows: Simplifying Your Workflow

Underline PDF in Windows enhances your document management process. With this tool, you can focus on your content while effortlessly adding emphasis to important parts of your PDF files.

Key Features

Easy-to-use interface for quick navigation
Customizable underline styles to fit your needs
Highlighter support to attract attention to key points
Saving options to retain your annotations
Compatibility with various PDF formats

Use Cases and Benefits

Perfect for students highlighting essential study materials
Ideal for professionals reviewing contracts or reports
Useful for researchers organizing important findings
Great for teachers marking important information in lesson plans

By using Underline PDF in Windows, you solve the challenge of managing lengthy documents. It allows you to pinpoint critical information efficiently, ensuring you do not miss details that matter. Emphasizing text helps in retaining information better and facilitates quicker reviews.

Get documents done
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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?
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Highlight, strikethrough, or underline text Choose Tools > Comment, and select the Highlight Text tool , the Strikethrough Text tool , or the Underline Text tool . Note: ... Drag from the beginning of the text you want to mark up. ... (Optional) To add a note, double-click the markup and add text in a pop-up note.
In order to enable the feature, please perform these steps. Open Microsoft Edge. Search for Enable Text Highlights for PDF flag. Change it to Enable. Restart Edge and open a PDF document in Edge. Select the text and right click to select Highlights. Choose the color that you prefer.
How to Underline Text in PDFs? Click Tools. on the toolbar -> hit Underline -> choose the words or sentences you want to emphasis; Or choose the text at first -> click Tools on the toolbar -> hit Underline; Or press shortcut Ctrl + Alt + U -> then select the text you want to underline.
0:56 2:09 How to Highlight Text and Custom Areas in a PDF on Windows YouTube Start of suggested clip End of suggested clip Files select the highlight text tool and set the color of your highlights. Select the text with theMoreFiles select the highlight text tool and set the color of your highlights. Select the text with the mouse cursor to highlight a pdf. You can use default and custom colors for your annotations. Add the

Video instructions on how to Underline PDF on Windows

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