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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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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.

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What our customers say about pdfFiller

See for yourself by reading reviews on the most popular resources:
I did not know there was a charge for using this until I got to the very end. I had spent too much time filling out the form to end and start over. I want to cancel at the end of one month.
Anonymous Customer
2014-08-19
Great product. Made tax time for my small business EASY and COST EFFECTIVE. I did my own tax documents and saved HUNDREDS of dollars the first time I used it because I didn't have to pay an attorney to do these simple forms.
Dennis F
2015-02-02
I was a little confused when I first began using the app, but did an online chat with their agent who walked me through what I needed to know. Therefore; I would recommend this subscription to any Commercial Insurance Agent who issues multiple Acord forms.
SUSANL M
2016-03-30
What do you like best?
I have been using PDFfiler for more than 4 years. It makes my pdf documents look professional. There is no longer a need to print a doc, fill it in with pen, scan, and send. PDFfiler reduces the amount of steps I have to take to get the job done. It helps to also have everything saved on the My Docs page. I can find the same tax documents I need month after month. PDFfiler also reduces the amount of paper needed to generate a document. I probably use PDFfiler every day.
What do you dislike?
I would like to be able to turn off the assisted pop-ups. They can obstruct the box I want to enter text.
Recommendations to others considering the product:
Simple to use. Makes your docs look professional and neat. Easy to manipulate a doc that is incorrect.
What problems are you solving with the product? What benefits have you realized?
I fill out every form on PDFfiler. It's automatic to me. In addition, when I am unable to edit a Word doc or other pdf, I know I can upload it to PDFfiler and get the job done right away.
Lisa Aliberti
2019-05-21
Excellent Excellent! Eliminates the concern of properly providing the essential information on documents. Takes a large load of concern off the mind. Highly recommended.
Mollie Williams
2020-03-19
amazing and user friendly and… amazing and user friendly and distinctive than any other pdf editors ... this is a must for any pdf users in such low cost
ganeshan k
2023-01-20
What do you like best? Ease of use, support within minutes, fair pricing What do you dislike? Would be nice if there was an app, downloadable What problems are you solving with the product? What benefits have you realized? Helps to easily fill out any PDF document
User in Real Estate
2021-08-09
I only needed it for one purpose, to make my client's insurance claim sheets a fillable form so I wouldn't have to freehand it. After the initial struggle to get it structured right it works wonderfully
Anonymous Customer
2020-10-30
Easy process and good program with a nice free trial, just not able to fit in my budget. Easy process, user-friendly, quick and efficient. I like that it let me trial it for a few days. I just don't have the money for a subscription right now and only needed to use it this one time.
Lindsay Waldbaum
2025-02-15

Do business more effectively and Underline PDF in macOS

When it comes to handling files in PDF, different operating systems have various capabilities. Some of them only allow a partial modifying, and some have no software at all. Avoid spending too much time looking for a service that’s compatible with your device and allows you to Underline PDF in macOS.

Simplify your workflow and use pdfFiller, a powerful solution for efficient document management. Just establish your network connection and open pdffiller.com to reach our professional online editor.

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

01
A cloud-based solution. Access all needed records from any device you have at hand.
02
No particular software and hardware requirements needed. You don’t need the newest tools.
03
Secure storage. All your actions are encrypted according to the latest security standards.
04
An all-in-one service. Update content, manage pages, insert fillable fields, and convert files in one comprehensive editor.
05
Solve your problems faster. Open the website, create an account, and complete PDFs.
06
Advanced protection. Increase your security by moving documents to the Encrypted folder. Set a password for accessing material or request recipients to provide additional authentication using a photo or a social network profile.

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

Underline PDF in macOS: Streamline Your Document Workflow

Underline PDF in macOS offers a simple and efficient way to annotate and manage your PDF documents. Whether you need to highlight important sections, add notes, or create a clear presentation, this tool is designed to meet your needs.

Key Features

Highlight text with precision
Add sticky notes for quick comments
Organize annotations with tags
Share and export annotated PDFs easily
Support for various PDF formats

Potential Use Cases and Benefits

Reviewing legal documents and contracts
Collaborating on academic papers
Preparing presentations and reports
Enhancing personal study materials

Underline PDF in macOS solves the common problem of managing large PDF files. By allowing you to highlight and annotate directly on the document, it saves you time and enhances your workflow. You can easily locate important information and share your insights with colleagues, making it a valuable tool for both personal and professional use.

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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 edit the text in PDF on Mac Open the editing mode by clicking Edit in the top toolbar. Click on the Text button. Choose the piece of text you want to edit. Edit text in PDF and click on the blank space to preserve your changes.
The Text Selection tool may not be selected: Choose Tools > Text Selection, or click the Show Markup Toolbar button , then click the Text Selection button . The PDF may require a password before you can select or copy text: Choose Tools > Show Inspector, click the Encryption Inspector button , then enter the password.
Highlight, underline, or strike though text In the Preview app on your Mac, open the PDF you want to change. Do any of the following: Quickly highlight, underline, or strike through text: Select text, click the down arrow next to the Highlight button , then choose a highlight color, underline, or strikethrough.
Command+U: Underline the selected text.

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