Password Protect PDF and Encrypt PDF for Internet Explorer For Free

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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:
This program has allowed us to reduce the amount of time it was taking to complete our main work task by at least 50%. The only significant improvement that would increase our experience would be the ability to rotate any specific text input by 90 degrees.
Dave
2016-12-16
It was a great experience because you can do many things with the opportunity to complete them in just a few easy steps. This is a very useful and well-organized website because it offers a lot to keep things at a minimum.
Angela H
2019-06-14
What do you like best?
Ease with which any preprinted form can be filled out and then printed.
What do you dislike?
Not much to dislike but if anything, the step of sending the finished document to the printer could be simplified.
What problems are you solving with the product? What benefits have you realized?
We are able to scan certain forms used for billing on various projects and simply change the numbers monthly and quickly print out the new monthly invoices.
User in Construction
2018-01-02
Lifesaver!! Lifesaver!!! I am not always able to print documents, fill, them out, sign them, and then scan them in and email them to recipients. This program allows me to skip most of the steps.
Ashley McMillan
2020-03-25
PDFfiller Review In my job, we send out contracts and W-9 forms to meeting attendees all the time. PDFfiller is great because attendees can quickly "sign" and send their documents right back, without having to print the forms, sign them manually, and then deal with faxing/scanning/or taking a picture to send it back. I like how seamless PDFfiller is. Sometimes, the actual signature does not populate, and all that shows is a stamp saying the person signed it. However, with things like contracts and W-9s, we need an actual signature, whether it be manual or digital.
Dana K.
2019-07-23
I only just started using it I only just started using it, so only 4 stars, but I don't see any issues other than the lack of fonts in the signature section. Seems to be a solid app.
Bloodreagon
2021-06-22
What do you like best? It has been the most useful piece of software I have for finding and applying for jobs: creating CV's and editable job applications very decent mobile app as well after the shock of being scammed by Adobe I hunted far and wide for a solution: PDF filler is it Thank you What do you dislike? Text input is clunky but effective but I can live with it What problems are you solving with the product? What benefits have you realized? For forms and applications that can be completed with mobile app means I can give lighting fast responses to job offers and other essential correspondence like applying for citizenship, legal and financial documents
simon bird
2020-08-30
Excellent Customer Service I had a problem with my account of my own making - the agent helped me on that chat and sorted it out in minutes. Professional, courteous, what's not to like? Worth every star!
customer
2020-08-24
SPEECHLESS HOW FLAWLESS THIS APP IS!!! I LOVE IT! IT WAS SIMPLE, ACCURATE, AND VERY PROFESSIONAL! I'LL NEVER USE ANOTHER APP. EVERYTHING I NEED IS WRAPPED UP IN THIS SINGLE PROGRAM!!
Ronique Dailey
2020-07-02

Password Protect PDF and Encrypt PDF for Internet Explorer

Secure your sensitive documents with our Password Protect PDF and Encrypt PDF feature designed specifically for Internet Explorer. This tool helps you maintain control over your files by ensuring that only authorized users can access your content.

Key Features

Add password protection to your PDF files
Encrypt documents to prevent unauthorized access
User-friendly interface for easy navigation
Compatible with Internet Explorer for seamless use
Fast processing for quick file security

Use Cases and Benefits

Protect confidential business reports from prying eyes
Safeguard personal documents such as financial statements
Control access to legal documents during sensitive transactions
Enhance data security for shared files over email
Comply with privacy regulations through encryption

By using our Password Protect PDF and Encrypt PDF feature, you address the risk of unauthorized access to your important documents. This tool empowers you to take charge of your digital security, offering peace of mind and ensuring that your files are shared only with trusted individuals.

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!

How to Password Protect PDF and Encrypt PDF for Internet Explorer

To ensure the security of your PDF files, you can password protect and encrypt them using the Password Protect PDF and Encrypt PDF for Internet Explorer feature in pdfFiller. Follow these steps to get started:

01
Open your Internet Explorer browser and go to the pdfFiller website.
02
Log in to your pdfFiller account. If you don't have an account, you can sign up for free.
03
Once you're logged in, click on the 'My Forms' tab at the top of the page.
04
Select the PDF file you want to password protect and encrypt from the list of your forms.
05
Click on the 'More' dropdown button next to the form and select 'Password Protect PDF' from the options.
06
A pop-up window will appear. Enter a strong password in the 'Password' field. Make sure to choose a password that is difficult to guess but easy for you to remember.
07
Click on the 'Encrypt PDF' checkbox to enable encryption for added security.
08
You can also choose to set additional permissions for the PDF file by clicking on the 'Set Permissions' button. This allows you to control who can view, edit, print, or copy the contents of the PDF.
09
Once you have set the password and permissions, click on the 'Save' button to apply the changes.
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Your PDF file is now password protected and encrypted. You can download it or share it securely with others.

By following these simple steps, you can ensure that your PDF files are protected and secure when using the Password Protect PDF and Encrypt PDF for Internet Explorer feature in pdfFiller. Enjoy the peace of mind knowing that your sensitive information is safe!

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 > 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.
Open the PDF and choose Tools > Protect > Encrypt > Encrypt with Password.
Click the Options button at the bottom of the save dialog window that appears. At the bottom of the options window, enable to Encrypt the document with a password option and click OK. Enter the password you want to encrypt the PDF file with and then click OK.

How to Password Protect PDF and Encrypt PDF for Internet Explorer - 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