Password Protect PDF and Compress 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
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

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:
At times, it is difficult to edit the pdf the way you want. There are too many steps to take in order to do what you want with your document. Eventually, I am able to get the pdf the way I want it.
Shonda
2016-07-08
It has made work much easier. In the legal field we deal with a ridiculous amount of documents. Many IRS and government forms require some PDF filler, Adobe Acrobat does not do the job PDF filler can. To be able to access my docs from anywhere is amazing. The email, sign, fax, and all the other features make it actually fun.
dan
2016-09-25
I was pleased to find the AIR realty forms on your site. We're trying to sublet our space in a commercial building and our landlord insisted on using the AIR forms
Richard F
2017-04-27
It is a time saving tool. There are times that I am faced with having to annotate, update or have a document signed immidiately I turn to PDF Filler with confidence...
Leonides V
2018-04-30
I love the program. The smart folder...not a fan. Do not like that we have to "tag" them and I would prefer to just make and name my own folders and move PDF docs into them as I wish (like windows mail).
Ada
2019-03-06
A Great Time Saving Tool This software is a great time-saving tool in that it allows me to fill in, search, and edit forms and send them electronically within minutes. That way, I don't have to manually hand write information the form, then scan them (or mail them) and wait for recipients to respond. The software basically digitizes the workflow process, which saves me a lot of time. The software is limited to specific industries and the forms and features that these industries use. Therefore, not all forms and features are fully applicable to our company so we can't take advantage of them.
Verified Reviewer
2019-04-14
Useful form creation and library tools Makes confirming client changes and work ideas more fluid with notifications of form signing. Wide tool set and excellent selection of preexisting forms. So many forms and flexibility to edit and create and cross share forms with clients, and the addition of the iOS app makes for a great always on solution and current information. Price is ok, for single users but for larger firms it may be a consideration. So far no other issues
Rimi A.
2018-12-12
Really Great Software I like that it's easily to fill in pdfs and also create fillable pdfs. I don't like that there aren't many support options available.
Rohmah A.
2021-12-10
It's alright I used it to complete a PDF, the only one that let me do it. I could complete a PDF I needed but that was for a game of Dungeons and Dragons that was done online as recreation with fellow students. I just tried the free trial and those things were kind of lacking but that's to be expected, nothing else though.
Verified Reviewer
2021-02-07

Password Protect PDF and Compress PDF for Windows

Secure your documents with our Password Protect PDF feature while reducing file size using Compress PDF. This solution simplifies document management, making it easy for you to share sensitive information safely and efficiently.

Key Features

Password encryption for document security
Simple interface for easy navigation
Drag-and-drop functionality for fast uploads
Batch processing for multiple files at once
PDF compression to save disk space and streamline sharing

Potential Use Cases and Benefits

Protect confidential information in business documents
Share large files via email without compromising quality
Organize personal files securely on your computer
Prepare legal documents while ensuring compliance
Simplify file management in educational settings

This solution addresses the need for both security and efficiency. By using Password Protect PDF, you can lock your documents against unauthorized access. At the same time, Compress PDF allows you to reduce file sizes, making it quick and easy to share without losing quality. Experience peace of mind knowing your files are both secure and manageable.

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.
Open the PDF and choose Tools > Protection > Encrypt > Encrypt with Password 6. If you receive a prompt, click Yes to change the security. 7. Select Require A Password To Open The Document, then type the password in the corresponding field.

How to Password Protect PDF and Compress PDF for Windows - 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