Password Protect PDF and Compress PDF for iPhone 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:
I found it to be very useful but expensive. I wish I would've had the option of paying monthly instead of a one time upfront transaction with no warning.
2016-04-10
Love it...with our computer system I can't figure out how to refile/reprint a claim with your PDFfiller form I can fill in the form print it and send it out.
2016-07-11
What do you like best?
Easy to use but comprehensive options for editing. Quick and efficient which is important with time sensitive docs and a busy life. Some recent new features tells me the company is progressive. I was having technical difficulties one day and support was responsive. I've tried numerous PDF/Editing programs. and this is by far my favorite. It's web based not some ap that you have to download that later crashes your computer. Can access it from any PC so that helps too.
What do you dislike?
The price is substantially more that I'd like to see. Takes a bit to save file to PC once done editing. can be a little slow at times but still a reliable tool I use at least weekly if not daily. Something in the $50 range would be delightful and it's well above that currently. Maybe efax for this price I have not used the esign feature yet so maybe will try that given our member benefit program is lapsing.
What problems are you solving with the product? What benefits have you realized?
Quick way to edit and correct documents. Easy to save and access later. Lots of options for composing sending and revising. I only use basic functions but there are several ways to use this valuable tool beyond the features I use that exceed other competitors.
Easy to use but comprehensive options for editing. Quick and efficient which is important with time sensitive docs and a busy life. Some recent new features tells me the company is progressive. I was having technical difficulties one day and support was responsive. I've tried numerous PDF/Editing programs. and this is by far my favorite. It's web based not some ap that you have to download that later crashes your computer. Can access it from any PC so that helps too.
What do you dislike?
The price is substantially more that I'd like to see. Takes a bit to save file to PC once done editing. can be a little slow at times but still a reliable tool I use at least weekly if not daily. Something in the $50 range would be delightful and it's well above that currently. Maybe efax for this price I have not used the esign feature yet so maybe will try that given our member benefit program is lapsing.
What problems are you solving with the product? What benefits have you realized?
Quick way to edit and correct documents. Easy to save and access later. Lots of options for composing sending and revising. I only use basic functions but there are several ways to use this valuable tool beyond the features I use that exceed other competitors.
2019-05-28
PDFfiller is an excellent product with…
PDFfiller is an excellent product with outstanding customer service. They're real and helpful and very very quick!
2019-08-30
Mostly good; however, movement from one field to the next was very slow. Also, text was not aligned properly when entered; however, it did print properly.
2022-01-06
Great tool for PDF format
It's good to have it and override feature added on
Smaller storage, clearer version, can override it, often use PDF format due to easier for storage, while others take too much storages
It's not free and commercialize product, so it can be personal use. It has limited features when it's not upgraded to an override version
2021-04-25
What do you like best?
Easy to replace text, add images, send for signatures, etc.
What do you dislike?
The organization of "my documents" is not very intuitive. Also wish there was an option to open the document without downloading.
What problems are you solving with the product? What benefits have you realized?
I have been able to complete team documents with multiple signers who are all in remote locations. I am able to rearrange and create valuable reports each month.
2021-02-16
The formatting on this website isn’t…
The formatting on this website isn’t good. The page doesn’t load properly, which doesn’t allow you to find the options to cancel your subscription before charging you. Luckily, in the support chat, Thomas was very helpful and understanding.
2020-12-03
PDF Filler makes it very easy to modify and create pdfs from anywhere. I specifically like their simplified process for editing. Their customer worked with me on an issue I was having and I'm satisfied with the result.
2020-08-21
Password Protect PDF and Compress PDF for iPhone
Secure your documents and optimize file sizes with the Password Protect PDF and Compress PDF features for iPhone. These tools help you manage and protect your important files effortlessly.
Key Features
Easily encrypt PDF documents with a password for added security
Reduce PDF file sizes without sacrificing quality
Simple user interface for quick access and usage
Compatible with all iPhone models and iOS versions
Support for various PDF formats and settings
Potential Use Cases and Benefits
Protect sensitive documents like contracts or financial reports
Share documents securely via email or messaging apps
Save storage space on your iPhone by compressing large files
Quickly send files without worrying about size limits
Organize and manage your PDF files more effectively
This feature solves your problem by allowing you to maintain control over your important documents. With password protection, you can ensure that only authorized individuals access your files. Additionally, compressing PDFs makes sharing and storing files on your device more convenient. Enjoy peace of mind knowing your documents are safe and accessible with just a few taps.
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
Can you lock a file on iPhone?
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 do I password protect files on my iPhone?
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.
How do I password protect a PDF on my phone?
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.
How do I password protect a PDF in Apple?
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.
How do you create a secure folder on iPhone?
Download Pinault. This application securely stores your private iPhone photos by creating a folder and locking the folder once you exit the application.
Download Secure Folder.
Download HD Secure File Storage/Viewer.
Can you add a password to a folder on iPhone?
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.
Can I lock a PDF with a 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.
How to Password Protect PDF and Compress PDF for iPhone - video instructions
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