Convert PNG to PDF and Encrypt PDF for Desktop 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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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:
Good afternoon, I have subscribed to PDFfiller and have even been charged $20 yesterday to use this program, however, when I try to log in, my password isn't recognized. Also, when I try to go back to change anything on my form, I find it time consuming to try to do this.I don't have a lot of spare time at work & I really don't like using the typewriter, because if I make a mistake & find it later.. I can't go back and change it, hence PDFfiller.. It says a msg will be sent to my email, however, I never receive this msg. It's not in my Inbox, Spam or Trash folders. I would like to use this program at work, so I don't have to use a typewriter. Can you help me with this log-in issue? Many thanks, Joyce Durbin From: Notification - PDFfiller <notifications@pdffiller.com> To: jdurbin_99@yahoo.com Sent: Wednesday, October 12, 2016 4:21 PM Subject: [PDFFiller] Thanks for subscribing to PDFfiller [ Do Not Reply ] Hello, Thank you for subscribing to the PDFfiller Monthly Personal plan. Your payment has been successfully processed. Your subscription details are as follows: Username: jdurbin_99@yahoo.com Subscription ID: 4k9cgm Plan Type: Monthly Personal, billed at $20 Next Automatic Renewal: 11/12/2016 You can now enjoy premium PDFfiller features that will enable you to edit, fill, and sign documents, collaborate with others, request digital signatures, eFax, and much more! You can also find documents you may need by searching our library of over 10M documents and fillable forms here. To change your payment information, cancel, or upgrade your subscription, visit My Account. You can review the cancellation and refund policy here or by speaking to our 24/7/365 support team. If you have any questions, please do not reply to this email, and instead please contact support by clicking the Contact Support button below. . Don't forget Download the PDFfiller app to access and edit your documents on the go, anytime, anywhere, from any iOS device. Thank you for choosing PDFfiller! The PDFfiller Team
Joyce
2016-11-15
I am too Busy at the present time but I find the program very helpful. I would like to review the program after I get into it in the tax season for more comments.
Patricia Mc M
2017-01-12
The PDF writer worked perfect for what I needed Pretty easy to use and worked just as advised. I needed this to fill out PDF documents vs. printing them out and hand writing them. In addition finish product is neat and looks professional. Don't have any negatives other than if it where free it would be even better, but the fee is small in relationship to what you gain.
Dave M.
2017-11-20
Life saver. Worked on an assignment for hours only to be unsuccessful, found pdf filler and my assignment was not only a success within less then an hr but presentation was all around better.
Lucinda
2024-02-23
Good for someone who isn't tech savy While I'd like to think I am pretty good with a computer -- I am by no means the level of a graphic designer or anything like that. But I do a lot of work with pdfs that need to be tweaked a bit and this is easy to use! The initial use can be a little daunting to someone who is new. But it's easy to figure out once you get a hang of it.
Cristina P.
2023-01-18
pdfFiller came through for me in a… pdfFiller came through for me in a business deal that was time sensitive. As a first time user, I was able to navigate this user freindly site and meet my deadline. Recommended!
Stan Brown
2022-05-04
What do you like best? Love all the forms and how it is so easy to edit forms What do you dislike? Love everything about the program! Highly recommended What problems are you solving with the product? What benefits have you realized? Using it for my real estate and property management business
User in Real Estate
2021-10-26
I don't like to pay in US Dollars! Takes a bit of a time to get used to the software. I was not aware that the prices are in US Dollars otherwise I would have opted for a Canadian companyOver all a very good software with many built in options to choose on.
Taru Tiwari
2020-11-29
I never leave reviews, but Elisa from the 'chat' help was so helpful that I am leaving a review!!! I usually avoid chat help on websites, but Im glad I stumbled upon Elisa. Truly helpful and very efficent. Just became a happy customer
roy k
2020-10-20

Convert PNG to PDF and Encrypt PDF for Desktop

Transform your PNG images into secure PDF documents with our intuitive software. You can easily convert and encrypt your files, ensuring your data remains private and protected.

Key Features

Simple conversion from PNG to PDF
User-friendly desktop interface
Encryption options for enhanced security
Batch processing for multiple files at once
Compatible with various operating systems

Potential Use Cases and Benefits

Protect sensitive documents for personal or business use
Prepare presentations with professional-looking PDFs
Archive important images in a secure format
Share files safely via email or cloud services
Reduce file size for easier storage and transfer

This software addresses your need for both conversion and security. By combining these features, you can manage your image files more effectively while keeping your information safe. Enjoy peace of mind knowing your documents are protected.

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
Open the PDF and choose Tools > Protect > Encrypt > Encrypt with Password. If you receive a prompt, click Yes to change the security. Select Require a Password to Open the Document, then type the password in the corresponding field.
Go to the Image to PDF converter. Upload your image. We accept PNG, as well as GIF, TIFF, BMP, and JPG. Then click 'Create PDF Now'.
Go to the Image to PDF converter. Upload your image. We accept PNG, as well as GIF, TIFF, BMP, and JPG. Adjust the formatting as needed. Then click 'Create PDF Now'. Continue to modify your PDF, and/or download it to your local drive when you're done.
PNG images are ideal for web graphics, especially logos, illustrations, and graphs. They can shrink to very small file sizes when colors and elements are limited, which is another plus. PDFs keep your images in one packet, so viewers can print and save designs and booklets easily.
Choose “image”-”PNG format” option. Then click on “convert” button and conversion will be performed in software. Once, PDF conversion is completed, PNG files will be saved to the destination folder with a transparent background that can be reviewed later.

How to Convert PNG to PDF and Encrypt PDF for Desktop - 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