Secure PDF File and Encrypt PDF for Windows Kostenlos

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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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Discover the simplicity of processing PDFs online

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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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Download, export, or share your edited file instantly
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:
so far so good. Not the easiest to find document while logged in. I find I have to do a search on the document from a web browser to get to it. PFDfiller couldn't find the doc from within the app.
Anonymous Customer
2015-09-22
IT HAS SOME TREAKY THINGS AND AT SOME POINT IF IT IS NOT PRINTED OR SAVE BEFORE HAND, YOU HAVE TO REPEAT THE WORK ALREADY DONE. IN THIS CASE, HAS BEEN A LITTLE UNPLEASANT SITUATION AND WASTE OF TIME, IT SHOULD HAVE SOME AUTOMATIC SAVING, AS IT OCCURS IN WORD.
DOMINGO A D
2016-07-24
The court PDF form did not allow the case number to be filled in on the second page "PDF filler to the rescue!" Thank you for your valuable program.
Bennie L. T
2017-05-15
Mostly I am thrilled with this service I didn't know I needed... until this week... and I needed it twice!! The form MC 030 was glitchy when it came to cut and pasting and editing the comments section. My only complaint.
Teresa K
2017-08-04
What do you like best?
The best feature is that you can email documents to vendors and have them electronically sign them and then email them back.
What do you dislike?
I don't think there is anything to dislike. When my company paid for me to have this I felt like I was in Heaven!
Recommendations to others considering the product:
If you are having issues getting signatures with your drivers- look no further! This is it! So easy to use and send and Drivers can send the signed documents back!
What problems are you solving with the product? What benefits have you realized?
We have a lot of vendors that work outside of the office so having a system where they can sign electronically is such an awesome feature!
User in Transportation/Trucking/Railroad
2019-04-23
What do you like best?
I have tried many different programs. I find PDFfiller to be the easiest to use for anything re: PDFs and to get signatures on paperwork.
What do you dislike?
It is a little more expensive than some of the other programs
Recommendations to others considering the product:
I highly recommend it for people who are not technical experts
What problems are you solving with the product? What benefits have you realized?
Signing documents, converting WORD files, editing PDFs
DENISE MERIDITH
2019-08-22
Organize my PDF nicely It was smooth and easy and quick. Thank you PDF filler is one of the best pdf converters. It has many usages. From storage, file conversion, editing and so on. Nothing, thus I like the app in general. I can do a lot for my pdf related files.
Rachel H.
2023-01-13
I grew tired of waiting for my colleague to get around to fixing our PDFs. This program has made it quick and easy for me to accomplish what we really needed to help our clients! I am very pleased with how intuitive it has been.
Melissa N
2021-07-29
I used this one time for squares for a fundraiser and was looking forward to continuing using this service needed for a side job; however, this side job fell through. I thought I had cancelled on March 2, but must have not submitted something. I was charged today. If I could be refunded I would really appreciate it.
Candice S
2025-03-10

Secure PDF File and Encrypt PDF for Windows

Protect your important documents with the Secure PDF File and Encrypt PDF feature for Windows. This tool offers a simple way to ensure your files remain confidential and accessible only to authorized users.

Key Features

Password protection for PDFs to control access
User-friendly interface for easy navigation
Advanced encryption standards for enhanced security
Batch processing to encrypt multiple files simultaneously
Compatibility with various PDF formats

Potential Use Cases and Benefits

Secure financial reports and sensitive business information
Share personal documents like tax returns or resumes without worry
Ensure client information remains confidential during collaborations
Protect intellectual property before sharing with partners

With the Secure PDF File and Encrypt PDF feature, you can eliminate the fear of unauthorized access to your documents. By using this tool, you gain peace of mind knowing that your valuable information is safe. It simplifies document management while providing robust security, ensuring your files remain private and secure.

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 your PDF file on Google Chrome. When you open the document for the first time, you'll have to unlock it by entering the password. After entering the password, your PDF file will be unlocked. Next, set the Destination as Safe as PDF and click on Save.

How to Secure PDF File and Encrypt PDF for Windows - video instructions

#1 usability according to G2

Try the PDF solution that respects your time.
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