Password Protect PDF and Compress PDF for Windows For Free

Drop document here to upload
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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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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:
So far... your chat feature to get support is great. I seem to be moving along just fine. I uploaded a document and completed areas of "fillable" information. I only did 4 STARS as I have not published this to my site and tested the form.
Louis R
2017-03-17
Thank you. I appreciate your service. As you can see, I am not in financial backing to do much business on the internet. I do thank you for this session.
Lisa H
2019-01-11
PDF Filler is the Best I really love using PDFiller it's a great tool for a new small business owner also with taking care of personal business as well. I love that you have so many tools, resources, and options.
TSH Consulting LLC
2019-06-22
this programme has helped me tremendously... i am a first time user of this pfdffiller and not good and computer programes so thanks so much for this easy programme
SOPHIA J
2024-08-07
jI just started exploring for virtual Notary options. Too early to give a proper opinion. This is when I signed up for a free trial, I do believe I also signed up for for your annual service, however, my queries for my Notary requirements are not CONFIRMED YET WHICH MIGHT CHANGE MY ANNUAL SUBSCRIPTION COMITMENT. I also need confirmation on the forms I will be focusing on for Immigration and Passport requirements, hope I get a response before I need to consider my annual commitment date BEFORE it is here! I am available eastern time M-F 11a-1p and 5pm-9pm . thanks
Norma E B
2024-02-19
a little hard to figure out at first but once I got the hang of it was great. Like the variety offorms tonselect from, some forms could be a bit more specific but other than thaat I love the program.
amber g
2021-05-15
What do you like best? Let's me search for forms with ease. Great to correct PDFs. What do you dislike? Printing can take multiple times to work What problems are you solving with the product? What benefits have you realized? It's helpful in filling a form that you can do with Adobe.
User in Real Estate
2021-04-21
Impressive customer service (LIVE support) I did not realise that my free trial expired until I got a charge for the month of December. I contacted 'live support' (which popped in in 20 sec) and Thomas was the most helpful I've ever experienced in customer service. He found out I had 2 accounts and when I explained to him that I actually only used the service once, he promptly offered me refund. I did not even expect one because I honestly thought this is another website that makes money by offering a trial and then charge you once trial is finished (which many of us would forget and only cancel when it is too late). But no, refund is already action, and he also cancelled my account as per my request with no fuss! Thomas, thanks for being extremely prompt and helpful! I will surely use this service next time. Thank you!
customer
2020-12-02
What do you like best? I like that I can fax documents without having to have an actual fax number What do you dislike? There isn’t much to dislike about PDFfiller. I like everything it has to offer. Recommendations to others considering the product: It’s easy to use What problems are you solving with the product? What benefits have you realized? N/A. I don’t have any problems.
User in Electrical/Electronic Manufacturing
2020-08-11

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