Lock PDF and Password Protect PDF for iPhone For Free

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Upload your document in seconds
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Fill out, edit, or eSign your PDF hassle-free
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Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
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Every PDF tool you need to get documents
done paper-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.
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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.

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:
Using iPhone to complete apps and send out for signature.. Had some glitches.. Wasn't able to select or choose (full access or sign only option for recipients. The screen shut down too quickly each time and 'disappeared before I could actually select.
Anonymous Customer
2015-09-02
Following my previous comment, I found the tax forms I was working on, but they were titled by the Form, not saved documents. Taking me well over an hour due to the labeling. Need a Saved Documents Option to simplify it.
Dennis A, Kish, S
2018-02-09
tough start, but Sam saved the day! SAM/ JULZ WAS WONDERFUL! SUCH A GREAT SUPPORT! After spending hours trying to fix the problem earlier and having no luck with the calling from billing dept. One agent hung up on me! He came to the rescue, worked to TEACH ME how to walk through the issue and solve the problem. I am so grateful! I will always ask for him in the future! perfect 10 for his effort and going out of his way to help really solve the issue and teach me how to handle it in the future!
DeAnna
2019-05-07
Web based PDF signing tool I use PDFfiller for signing purchase orders or sending proposals for clients to digitally sign. It's great because users can sign documents in their browser without needing to download anything. PDFfiller's editing tools leave much to the imagination. I don't use the editing features as I can accomplish what I need with other programs.
Dave R.
2019-09-28
Absolute perfection Absolute perfection. Saved my butt a multitude of times when procrastination had me in its violent and deadly grip. I love you all and wish you the best in life. When I become a billionaire I will retire you all if this beauty of an app hasn't done that already. Xoxoxoxo
Hanna
2022-11-24
Basic but good PDF editing. Reasonable support. Basic but good PDF editing. Writing this though cause their support is swift and reasonable. I accidentally left my subscription running for 3 months after just using the free trial for 1 PDF edit. After 1 email they refunded all 3 payments without making me jump through hoops. Thanks guys.
Kairan Howard
2022-09-05
More Than Five Please make it possible to do things at a higher capacity, such as split more than five documents at once and upload more than five documents at once.
ma
2022-06-08
I've had pdf filler for some time. I've had pdf filler for some time.Absolutely love it. Would not be without it.Definitely an A+. Everybody needs it businesses and individuals.
Shirley Garmon
2021-02-26
A Time Saver for Any Business who deals with PDFs Extremely satisfied. We had no idea how much time we were spending on PDF management prior to PDF Filler. A huge benefit for us when we discovered this tool. We work in a heavy regulatory environment, so the ability to edit and amend PDFs quickly and in a compliant manner is huge. The Tool is amazingly user friendly and a huge time saver. We'd like to see them expand to different document sets. As our business grows we anticipate additional unique document types. It does PDFs well but it limited.
Verified Reviewer
2021-01-29

Lock PDF and Password Protect PDF for iPhone

Keep your important documents safe with our Lock PDF and Password Protect PDF feature for iPhone. This simple yet powerful tool allows you to secure your PDFs from unauthorized access, ensuring that your sensitive information remains confidential.

Key Features

Easily lock any PDF with a secure password
User-friendly interface for quick protection
Compatibility with all iPhone models
No internet connection required for operation
Quickly unlock PDFs when needed

Potential Use Cases and Benefits

Protect financial statements and tax documents from prying eyes
Safeguard personal contracts or legal documents
Secure confidential business reports and presentations
Keep private information, like medical records, away from unauthorized access
Ensure that students can protect their school assignments and projects

By using our Lock PDF and Password Protect PDF feature, you solve the problem of keeping your sensitive documents secure while traveling or sharing devices. This feature adds a layer of security that gives you peace of mind. Now, you can manage your information safely on your iPhone, without worrying about who may see it.

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!

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
Run the file manager app on your iPhone or iPad. Tap Settings at the bottom, select Enable Password, you will then be able to set a password to protect any sensitive data on the phone.
No. You can download apps that allow you to password protect data inside the app. Not natively, however there are apps that you can purchase for this purpose. The Best secret folder, and folder lock for iPad, allows you to password protect folders.
Start by downloading the app from Google Play. Next, open it > password protection > import the PDF from your device memory. If you don't see any directory, clear the app data and try again. Now, you'll see two password option owner password and user passwords.
In the Preview app on your Mac, open the PDF that you want to password-protect. Choose File > Export, then select Encrypt. You can also enter a new name for the PDF if you want to create a pass worded copy and keep the original PDF unencrypted. Type a password, then retype it to verify the password.
One-click option to protect a PDF with a password Choose File > Protect Using Password. Alternatively, you can choose Tools > Protect > Protect Using Password. Select if you want to set the password for Viewing or Editing the PDF. Type and retype your password.
If you do not want to compress files, but merely lock files and prevent them from authorized access, you can choose the Lock option. After that, you will be able to choose a 4 digits password or passcode to lock the data. You can't delete locked folder which is protected with a password by File Master on iPhone.

How to Lock PDF and Password Protect PDF for iPhone - video instructions

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