Convert PNG to PDF and Unlock PDF for iOS For Free

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Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
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Last updated on Dec 12, 2023

Edit, manage, and save documents in your preferred format

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Convert documents with ease

Convert text documents (.docx), spreadsheets (.xlsx), images (.jpeg), and presentations (.pptx) into editable PDFs (.pdf) and vice versa.
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Start with any popular format

You can upload documents in PDF, DOC/DOCX, RTF, JPEG, PNG, and TXT formats and start editing them immediately or convert them to other formats.
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Store converted documents anywhere

Select the necessary format and download your file to your device or export it to your cloud storage. pdfFiller supports Google Drive, Box, Dropbox, and OneDrive.
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Convert documents in batches

Bundle multiple documents into a single package and convert them all in one go—no need to process files individually.
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Preview and manage pages

Review the documents you are about to convert and exclude the pages you don’t need. This way, you can compress your files without losing quality.
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Protect converted documents

Safeguard your sensitive information while converting documents. Set up a password and lock your document to prevent unauthorized access.

How to quickly convert and compress your PDF?

Upload your document

Upload a document from your device, cloud storage, email, or URL.
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Use the converter tool

Select your document and click Convert .
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Select format and destination

Decide on the file type and where you want to save the converted document—on your device or in your cloud storage.
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Manage pages and additional settings

Once everything is set, you can access advanced settings to compress a document by excluding unnecessary pages, set passwords, and select other options.
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Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025

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:
The interface has improved, but it is not perfect. I chose PDFiller because of its simplicity. I love that I can use it anywhere without having to install it in every computer I use. I wish it included a crop feature or the ability to modify the page size. I also wish we could delete previous files with the same name so that there is no confusion. There are several other little things, but these are the top major issues I've had.
Linda S
2016-12-13
i love the copy feature so I can duplicate forms and just change the dates instead of filling out the whole form again when everything else stays the same.
Andrea G
2017-01-16
I first tried PDFfiller with a trial subscription and to be honest, I really just wanted it so I could add text to a document and I didn't plan to extend my subscription. But after trying it, I liked it so much, I continued the subscription after the trial and my subscription expires in 2 days and I plan to renew for another year. I'm a freelance paralegal and often need to add text (and complete forms) in .pdf format. The program is also very easy to use and has many great features (like "erase" and different font styles and sizes). My subscription has more than paid for itself and I would - and do - highly recommend PDFfiller to anyone looking for this type of program.
Vanessa
2017-06-02
Great office tool to use. I used PDFfiller to fill out superannuation and government forms where clarity is desirable. Very easy and intuitive to use.
Julian
2017-11-04
You need t tell people that if they enter numbers with commas, the IRS filing process does not work. After lots of time and trial/error, I stumbled across that as the cause of my problems.
Ike H
2018-02-04
Kara was quick to reply to my query and… Kara was quick to reply to my query and was of immediate help , great knowledge and friendly . Qualities many businesses have forgotten of late. Thank you David
Mr David Webb
2023-09-27
Lifesaver Create a fillable document and send it out for signature - simple, efficient, affordable. I am in Real Estate and needed an uncommon document for a client, this website saved me hours of tedious re-typing!
Krista Steffen
2021-10-05
I use this almost on a day to day with all kinds of documents. it is the best thing that has happen to me when it comes to computers. I have been trying to get everybody I know to get this program, I paid for the year and most likely will pay for next year too.
DuPresa J
2021-04-10
Other than being billed initially for a 30 days trial,... Other than being billed initially for a 30 days trial, I contacted Customer Service right away and they credited me back the $144 first year right away. Otherwise, I am liking the service so far. Just learning how to use it.
anonymous R.
2020-05-07

Convert PNG to PDF and Unlock PDF for iOS

Transforming your images and accessing your important documents has never been easier. With our Convert PNG to PDF and Unlock PDF feature for iOS, you can efficiently manage your files right from your device.

Key Features

Convert PNG images to PDF format seamlessly
Unlock secured PDF files with ease
User-friendly interface for smooth navigation
Support for multiple file conversions at once
High-quality output for professional results

Potential Use Cases and Benefits

Create professional PDF documents for work or school projects
Share images in PDF format for better compatibility
Access and edit locked PDF files for important documents
Organize files efficiently on your iOS device
Enhance collaboration by converting and unlocking files quickly

This feature addresses your common frustrations with file management. Whether you need to convert images for a presentation or gain access to locked PDFs, our solution simplifies the process. Enjoy the confidence of knowing you can handle your documents effectively, and any obstacles no longer stand in your way.

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
Drag and drop your document in the PDF Password Remover. Confirm that you have the right to the file and click 'Unlock PDF!'. The decryption process should start right away. Modify your PDF further, or click 'Download File' to save the unlocked PDF.
Open Locked PDF Drag and drop your password-protected PDF into this tab. If your PDF file has an open password, then you will get a new window to ask for the open password. Just enter the correct password to open it. If your PDF file has the permission password, then you can open it in Chrome directly.
Choose Tools > Protect > Encrypt > Remove Security. Remove Security: The options vary depending on the type of password security attached to the document. If the document has a Document Open password, click OK to remove it from the document.
Your iPhone or iPad is designed to open PDF files automatically. If you are having this problem with some PDF documents, it is possible that those PDF documents may be corrupted. These files cannot be opened if they are corrupted. Perhaps the PDF file you could not open was not downloaded properly.

How to Convert PNG to PDF and Unlock PDF for iOS - video instructions

#1 usability according to G2

Try the PDF solution that respects your time.
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025