Stay mobile Lock PDF Files on Smartphone For Free
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Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Every PDF tool you need to get documents done paper-free

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.
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:
It is a time saving tool. There are times that I am faced with having to annotate, update or have a document signed immidiately I turn to PDF Filler with confidence...
2018-04-30
For doing signatures electronically this is fantastic! As a transplant patient, it's not a good idea to leave the house during this corona virus time, so this work as a great method to get this done.
2020-04-05
What do you like best?
Ability to edit then fax. Simple to find documents that I have scanned to PDF format.
What do you dislike?
Could have a better fax cover sheet, it should be more graphic
Recommendations to others considering the product:
Just do it. Will save you time.
What problems are you solving with the product? What benefits have you realized?
Saves time
Ability to edit then fax. Simple to find documents that I have scanned to PDF format.
What do you dislike?
Could have a better fax cover sheet, it should be more graphic
Recommendations to others considering the product:
Just do it. Will save you time.
What problems are you solving with the product? What benefits have you realized?
Saves time
2019-08-15
Thanks to this app I am able to edit my work pdfs
Thanks to this app I am able to edit my PDFs so easily. This helps a lot in my corporate life. I do not know what I would do without it. my favorite feature is the one that allows me to edit the order of the pages, and merge PDFs together.
2024-09-12
Great Customer Service!
I had a billing/subscription issue and it was fixed in less than one minute. I had Sam as a support and he was very pleasant to work with. Thank you for having great customer service.
2023-05-26
Totally satisfied with both product and customer service.
I recently found out I was paying for two separate accts., and I contacted PDFFiller and they were able to straighten it out for me, I am very satisfied with both their product, and their customer service.
2021-02-23
Definitely recommend!!
Pdf filler was easy to use and it has endless things you can fill. I have not come across anything else like it. The team and customer service is top notch, quick, friendly and helpful!
2020-10-25
I Will Recomended because I had to edit…
I Will Recomended because I had to edit my document multiple times since their was mis information I put. So is could you can edit it again and again.
2020-05-11
Being a young 70+
Being a young 70+, I initially had some issues but managed to overcome them relatively easily, and I am very satisfied with the product, and the results I have achieved..
2020-04-18
Stay Mobile: Lock PDF Files on Your Smartphone
Introducing the Stay Mobile feature that allows you to lock PDF files directly on your smartphone. This tool focuses on enhancing the security of your important documents and ensuring that your sensitive information remains private.
Key Features
Easy locking mechanism to secure PDF files
User-friendly interface for quick access
Compatible with various smartphone models
Customizable password options for enhanced security
Immediate notifications for unauthorized access attempts
Use Cases and Benefits
Protect personal financial documents from unauthorized viewing during travels
Lock work-related PDF files to maintain confidentiality while collaborating
Secure sensitive medical records to comply with privacy regulations
Prevent accidental sharing of important legal documents or contracts
Stay Mobile effectively addresses your need for document security. By locking your PDF files, you gain peace of mind knowing that only you have access to your important information. This feature empowers you to manage your documents confidently, whether at home, at work, or on the go.
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 do I password protect a PDF on my phone?
How to set a password to protect PDFs on Android. Begin by navigating to the password protection page on your preferred browser. Click the Select A File button to choose and upload your PDF. Create a password and enter the password, then retype it to confirm.
How do I put a password on a PDF app?
Click the Select a file button above or drag and drop a PDF into the drop zone. Enter a password, then retype it to confirm the password. Click Set password. Download the password protected PDF document or sign in to share it.
How do I lock a PDF on my phone?
How to set a password to protect PDFs on Android. Begin by navigating to the password protection page on your preferred browser. Click the Select A File button to choose and upload your PDF. Create a password and enter the password, then retype it to confirm.
How do I lock a PDF on my iPhone?
How To Lock PDF With Password Open Files and tap on Browse (bottom-right in the footer menu). Go for On My iPhone. ... Tap Downloads or any other available folder that stores the PDF that you want to protect. Tap on the document's thumbnail to open it. Use the Share icon. Select Lock PDF. Type a Password and verify it.
Video instructions on how to Lock PDF Files on Smartphone
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