Password Protect PDF and Compress PDF for Windows 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
Note: Integration described on this webpage may temporarily not be available.
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Last updated on Nov 13, 2024

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:
PDFfiler allowed me to create a far superior MO Real Estate Disclosure form. It allowed me to edit to my heart's content, rather than scratching handwritten stuff out and ending up with such a mess that i had to hand write another copy. The end result was far more professional looking than a handwritten form. About a 5 minute learning curve and the software functioned perfectly. After editing, I was able to save the pdf to my computer, send it by email, print it, and some other stuff that I didn't use. PDFfiler can also get remote signatures.
playdayz
2015-06-26
The App is clunky and not easy to use and annoyed that when trying to combine different documents have to upgrade to the next level. So overall good product on laptop, poor app and disappointing capabilities v price.
Garry
2017-07-25
Happy User we have accidentally deleted some forms and we couldn't find it, but our overall experience is great easy to create a fillable forms and let our clients to fill need to pay upgrade to get certain function, like just directly download the filled form from my clients
Joanne y.
2019-03-19
Great Customer Service I only needed the service for a specific period and thought I cancelled the service, until I was charged. I contacted customer service and gave every possible email address the service could be connected to, so I thought. None of those emails showed service connected to it, so they ended up submitting a trouble ticket. A few days later they contacted me to see if I was connected to another email address, and it was my husband's business, that I never thought about. Even though it automatically renewed, they responded that they would refund the charge.
Yolanda Clay-Moore
2023-05-16
With some emails back and forth With some emails back and forth, I was very happy with the outcome of my communication with their team. I saw another post about the high price tag after the free trial, that is true, maybe both buyers and sellers should look at monthly options for those on fixed incomes.
Randal Dunn
2023-01-19
It is useful. Only thing I would like is for it to figure out what font I had on the document BEFORE I edit it. I have contract templates that I use that I have to edit sometimes and finding the font that will match that size and actual type is very difficult. i usually end up just dealing with whichever one I find. If there is a way to do that, please let me know via email.
Christopher N S
2021-11-02
PDF Filler has been a life-saver PDF Filler has been a life-saver. It is quite easy to use and the process to edit and download files is also pretty easy.
Edward F.
2021-09-21
I love the features and ease of use of… I love the features and ease of use of this service. It really has been a great asset to my Resume Service. Thank you so much! Kind Regards, Lucinda Kerrigan, CPRW
Lucinda Kerrigan
2021-01-21
I need to learn more about the… I need to learn more about the pdffiller. I am interested to know other features to assist in my tax practice.
Isidra Martin
2020-12-21

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