Stay mobile Underline PDF on Mobile For Free

Drop document here to upload
Select from device
Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
Note: Integration described on this webpage may temporarily not be available.
0
Forms filled
0
Forms signed
0
Forms sent

Discover the simplicity of processing PDFs online

Card illustration
Upload your document in seconds
Card illustration
Fill out, edit, or eSign your PDF hassle-free
Card illustration
Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Trust Seal
Trust Seal
Trust Seal
Trust Seal
Trust Seal
Trust Seal

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

Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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:
This program worked for me when I had to do a state specific purchase & sale agreement/real estate. All six signers lived in different states and so had to digital sign. Easy to walk them through it.
carol s
2015-08-06
Helpful, does what I need to do. The only reason I gave it four stars is because you can't see the comments unless you are online and sometimes I am traveling to places without wifi access so it would be nice to view my downloaded documents and see the comments I attached to them.
Janell
2019-04-25
What do you like best?
Ability to add notes to PDFs for my clients. It really does help answer questions for them much faster and help them understand the document better.
What do you dislike?
I wish I could merge and rearrange documents without it costing more to upgrade to do so. Would also be nice if If could set two password when securing a file. One for client and my master password
What problems are you solving with the product? What benefits have you realized?
Being able to mark up pdf documents for my clients that otherwise I could not. I like the pen option to call out important numbers for them to review. Being able to highlight where there signature is needed is an added plus
Consultant in Financial Services
2018-01-17
What do you like best?
That all work is saved on the system which makes is easily to retrieve
What do you dislike?
Sometimes getting forms can be a little difficult
Recommendations to others considering the product:
Definitely use this product if your in need of Accord forms it makes a world of difference.
What problems are you solving with the product? What benefits have you realized?
Allows my office to have a universal platform for creating accords and saving them
User in Insurance
2019-01-28
I found the website to be very useful… I found the website to be very useful when I needed it to read and edit pdf files. The website is very easy to navigate and use.
Christopher Lile
2022-10-04
Best and complete tool to edit PDF documents. Editing PDF files is so simple and easy with PDF Filler like using a Doc editor. I use it everytime to edit dates and sign documents, just sign on my device with my finger so every signature is different. They could add a tool to increase the quality or resolution of scanned PDF files.
Jairo L.
2022-06-26
I love the product and service I love the product and service, and will soon use all my 5 licenses. Honored to reference your Company for any prospects. Keep up the good work and stay safe.Thanks and regardsAlan L. Krishnan(703) 628-6422
Lakshminarayanan Krishnan
2020-06-01
Highly Recommend! I have been using PDF Filler for some time now, and I am beyond satisfied with their service. The platform is incredibly user-friendly, making it easy to edit, sign, and manage documents with just a few clicks. The documents they provide are always professional and up-to-date, ensuring that I have access to the most current forms and templates. What sets PDF Filler apart is its efficiency and reliability. Whether I need to complete a simple form or handle more complex document processing, the platform delivers every time. Their customer service is also excellent, providing quick and helpful responses whenever needed. I highly recommend PDF Filler to anyone looking for a seamless document management solution. It has made my workflow so much more convenient and efficient. Five stars all the way!
Sydney Taylor
2025-03-18
Very easy to use Very easy to use. Loved it. Struggled with editing sideways orientated text. Type replaced went a little wonky, it was for a quick edit to a a basic document, not an official presentation, in which case I might have required a more powerful editor.
Customer
2024-12-26

Is it possible to Underline PDF on Mobile?

Handling document management routine on your computer or laptop is a rather uncomplicated process, however, when you need to Underline PDF on Mobile, you may bump into issues. It’s not uncommon to find some mobile software underdeveloped or just tedious.

pdfFiller is a web-based PDF editing program with advanced functionality for smartphone users and allows you to Underline PDF on Mobile just like you would on your laptop. You're free to choose how you work. Utilize the web application, desktop application, or the mobile one. Check out the list below for the best features available on mobile devices:

01
Simplify collaboration. Highlight content or add comments for your colleagues
02
Request additional authentication. Ask recipients to confirm their identity by taking a photo or linking social media profiles
03
Cover sensitive data. Use the Blackout option to hide delicate information that shouldn’t be spread to third parties
04
Export content. Share samples via links, emails, messengers, or fax
05
Add new objects. Insert texts, crosses, checkmarks, images, text boxes, or simply draw on a document
06
Convert files. Save your records as files in PDF, Word, Excel, or PowerPoint formats
07
eSign documents. Create a legally-binding signature and send a form for signing in seconds

Manage documents like a professional. Do business right from your browser or install the application. Despite of your choice, all your data is protected with the most up-to-date encryption features, so that nobody could get unauthorized access to your data. Don't wait, take advantage of professional document management now!

Stay Mobile Underline PDF on Mobile Feature

Stay mobile with the Underline PDF on Mobile feature. This function allows you to highlight important text effortlessly while on the go, enhancing your productivity and focus during document reviews.

Key Features

Highlight text smoothly using touch controls
Save and store your annotations for future reference
Sync with cloud services for easy access from any device
Share annotated documents with team members or clients
User-friendly interface for quick navigation

Potential Use Cases and Benefits

Students can underline key concepts in their lecture notes
Professionals can annotate PDFs during meetings or presentations
Writers can highlight inspirational quotes for their work
Researchers can mark important findings while reading studies
Anyone can manage personal documents efficiently with clear annotations

This feature solves your problem of keeping track of significant information in documents. With Underline PDF on Mobile, you can easily mark and recall crucial points right from your smartphone. Whether you are studying, working, or reading for pleasure, this tool keeps you engaged and organized.

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 Stay Mobile Underline PDF on Mobile Feature

The Stay mobile Underline PDF on Mobile feature allows you to easily underline text in your PDF documents using your mobile device. Follow these simple steps to make the most out of this feature:

01
Open the pdfFiller app on your mobile device.
02
Sign in to your pdfFiller account. If you don't have an account, you can create one for free.
03
Locate the PDF document you want to underline. You can either upload a new document or choose one from your existing documents.
04
Once you have selected the document, tap on it to open it.
05
Navigate to the page where you want to underline text.
06
Tap on the 'Underline' tool located in the toolbar at the bottom of the screen.
07
Using your finger or stylus, swipe over the text you want to underline. The selected text will be highlighted and underlined.
08
If you want to change the color or thickness of the underline, tap on the 'Settings' icon in the toolbar and adjust the options according to your preference.
09
To remove an underline, simply tap on the underlined text and select the 'Remove Underline' option.
10
Once you have finished underlining text, you can save the changes by tapping on the 'Save' button in the top-right corner of the screen.
11
You can also share the underlined PDF document with others by tapping on the 'Share' button and selecting the desired sharing method.
12
That's it! You have successfully used the Stay mobile Underline PDF on Mobile feature to underline text in your PDF document.

With the Stay mobile Underline PDF on Mobile feature, you can easily highlight important information or make notes in your PDF documents while on the go. Start using this feature today and enhance your productivity!

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
Part 1: How to Highlight PDF on iPhone, iPad and Android You can download the PDF highlighter App on your devices, open the PDF file with the APP and then find the PDF annotation tools to highlight and annotate the PDF file on your mobile devices.
How to Underline Text in a PDF on iPhone Open the PDF document in Highlights. Tap the PDF you want to open in the Highlights document browser: ... Select the text you want to underline. This will bring up the selection popover: Tap the underline button in the selection popover.
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.
Add markup Tap the Navigate icon and then scroll up, down, left, or right to navigate your way through the PDF to the place where you want to make your markups. Tap and hold the Pen icon to select either the Pen or Highlighter option.
To accent text or images, tap and hold the Highlight icon. Select either the Highlight, Underline, or Strikethrough option, then at the bottom of the screen, expand the Styles menu to further customize your selection.
6:48 13:16 Top 5 Best PDF Annotation Apps on Android for 2022 - YouTube YouTube Start of suggested clip End of suggested clip Option so it will take you where you have all your pdf files. So you can select any pdf. File forMoreOption so it will take you where you have all your pdf files. So you can select any pdf. File for example i select this pdf file over here and now if you want you can annotate this pdf. File so you

Video instructions on how to Underline PDF on Mobile

#1 usability according to G2

Try the PDF solution that respects your time.
Trust Seal
Trust Seal
Trust Seal
Trust Seal
Trust Seal
Trust Seal