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:
I love PDF filler. If you have any new software that you need trials to be done on, I would love to test it. Thank you PDF Filler for saving me on many occasions!!
Vito U
2017-03-17
Very easy to sign up. More importantly, easy to use. Source docs easy to upload. Screens and features facilitated doc completion. Able to point and click pdf conversions rapidly.
Anonymous Customer
2018-06-24
I do a lot of my work on a chromebook. This PDF Filler lets me do a lot of things that I've only ever been able to do on my desktop. I'm very pleased to have this capability become web-based
Chris L
2019-09-15
Sloppy Documents No More! It's extremely easy to use and affordable. Worth every penny for our Real Estate team. We go through a ton of documents and PDFfiller keeps us looking professional and not sloppy like some agents we do business with. Professionalism is everything in our line of work. The ease of use and the finished product! We get contracts from agents who *don't* use PDFfiller and it's hard to take them seriously. Their documents look very unprofessional. Nothing. It's easy to use and produces perfect results every time. PDFfiller enables us to take pride in our work- which is a direct reflection of our brand as a Real Estate team.
Mariah W.
2020-01-03
customer support I had cancelled my subscription but it had not gone through and was charged. I explained this to the customer support team and they helped me very nicely and gave me a refund. It was efficient and very understanding!
Bintou Kane
2023-10-01
I am glad to have found this site/app… I am glad to have found this site/app because it has made doing school at home possible. Its so easy to use i just wish i the price was a little lower as for an unemployed it is a little steep.
Shirou Emiya
2023-01-23
PDF Filler is an excellent way to edit… PDF Filler is an excellent way to edit pdf documents. Very easy to understand and to edit. I highly recommend PDF Filler. They have many extra benefits and services as well.
Sandra Miller
2021-09-01
I had an issue and emailed the company and not only did 2 different people respond immediately they resolved my issue within a few hours of me sending the email. I’ve never seen that quick of a response before. Very impressive.
Rob K
2020-10-26
I wish it was a little easier to type things into my... I wish it was a little easier to type things into my papers however I am getting the hang of it, I dont like that sometimes I will click in an area and the typing bar doesnt appear where I clicked on, but near the area, sometimes thats in the middle of a line on the page and thats annoying.
Moriah S.
2020-05-22

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