Password Protect and Secure PDF File 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
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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 so good. I don't particularly like receiving notification of pricing terms after I've done the work of filling in the form(s). You should present pricing up front. Otherwise, I appreciate the service you're providing.
Russell
2014-05-16
Super awesome! I love how you are not overpriced. Super easy to use. I have recommended this to everyone in my office. So many programs rolled into one!!! Thank you!!!
Lisa R
2019-12-18
What do you like best?
I love the program as a homeless case manager, I can review information with clients, send to them for review, and signature from my office
What do you dislike?
It needs a desktop application for easier access vs going to the website all the time.
What problems are you solving with the product? What benefits have you realized?
decreasing my travel, having access to documents when I need them in the PDF website, and access to cloud networks
Consultant in Non-Profit Organization Management
2019-05-28
What do you like best?
PDFfiller is easy to use and has widely varied functionality. From the editing of documents to the administrative/management aspects of the program, it is quick and simple
What do you dislike?
Some elements of the interface gets a bit busy. It ends up leaving me with a somewhat small visual operating space. It is worth mentioning, though, that this has improved a bit in the last six months or so.
What problems are you solving with the product? What benefits have you realized?
I'm using the templates to edit and send out letters, which I like. I'm also sometimes using the direct email function.
User in Real Estate
2020-02-03
Very easy to use I like that it notifies me when someone has completed the document. I also like how you can customize the fields between numbers and dates which makes it fool proof. Support is very quick to respond and helpful. I have been trying to set up a document to copy certain fields throughout so they do have to enter their "name" every time, but I have had trouble trying to figure it out.
Vanessa D.
2017-11-27
4 stars because I can't remove the… 4 stars because I can't remove the "Verified by PDF Filler" symbol when I do a signature
kamravap
2021-06-16
An excellent company with mind-numbingly awesome customer service. I expected an automated response and a week or more wait to resolve an accounting problem, what I experienced was not only a response but total problem resolution in less than and hour. Unfortunately I dont have need for their services at the moment because these guys are just the type of business I want to do business with and I am positive you will too. Thank you **** and ***** for your unbelievable attention to detail and rapid results.
JBaxter
2021-02-25
This is a wonderful source for various… This is a wonderful source for various forms that you may need to create(e.g.,invoices and proposals) and the customer service is phenomenal! I am convinced that I will be a lifetime customer!!
Ms. Tee
2020-12-08
Not only did I find the product acceptable, but the Customer Service was wonderful, the fast response was the most surprising. My issue was resolved in a day or so ONLINE and included a refund. Keep in mind you cannot get that type of service in person At your local store. Kudos!! *** *
Robert
2020-07-07

Easy Password Protect and Secure PDF File and much more, with pdfFiller

If you have ever been fed up with using single-function programs where you are only capable of complete one manipulation at a time, we understand how you feel. Hours are wasted switching back and forth among multiple solutions. Try using pdfFiller to get things done sooner and speed up these processes.

pdfFiller is a professional, web-based PDF editing tool that actually works from the cloud. In order to Password Protect and Secure PDF File, you just need to open a web browser, log in, opt for a document template, and Password Protect and Secure PDF File in minutes. The process of editing files in PDF is simple, smooth actually. An advanced set of tools enables you to do what you need and even more. Here are the most helpful tools you can use within your documents on pdfFiller:

01
Templates. Generate reusable forms and fill them out as many times as you want
02
Electronic signatures. Certify agreements and contracts straight from your device
03
Fill out fields. Obtain the data from your recipients the smart way
04
Watermarks. Place your logo or business name on the document's pages to protect yourself from plagiarism
05
Extensive export. Send a document by email or fax, transfer it to the cloud, or download in one of the available formats: PDF, DOCX, XLSX, PPTX, and JPG
06
Page management. Rotate, delete, or add new pages

pdfFiller is not only convenient for Password Protect and Secure PDF File but keeps the data secure. Your data is stored and transferred among the servers firmly following the General Data Protection Regulation standards. Thanks to the two-factor authorization, you don't need to go another day with your data exposed to unauthorized third parties.

Value your time and get started with pdfFiller today for a streamlined approach to how you Password Protect and Secure PDF File.

Password Protect and Secure PDF File Feature

Securing your PDF files has never been easier. With our Password Protect and Secure PDF File feature, you can ensure your sensitive documents remain private and safe from unauthorized access. This feature gives you peace of mind while sharing or storing vital information.

Key Features

Easily set strong passwords to restrict access to your PDF files
Encrypt your documents for added security
User-friendly interface for quick setup
Compatibility with various PDF readers
Ability to customize permission settings for viewing, printing, and editing

Potential Use Cases and Benefits

Secure financial reports and sensitive business documents
Protect personal information such as medical records or legal documents
Share confidential files with clients or colleagues without risks
Comply with data protection regulations and enhance overall security stance

This feature is crafted to solve your security challenges. By allowing you to password protect and encrypt your PDFs, it ensures only authorized individuals have access to your sensitive information. With our solution, you can confidently share your documents, knowing they are well-guarded.

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 and Secure a PDF File with pdfFiller

Protecting your PDF files with a password is an essential step to ensure the security and confidentiality of your sensitive information. With pdfFiller's Password Protect and Secure PDF File feature, you can easily add a password to your PDF files and prevent unauthorized access. Follow these simple steps to get started:

01
Log in to your pdfFiller account. If you don't have an account yet, you can sign up for free.
02
Once you're logged in, click on the 'MyBox' tab at the top of the page.
03
Select the PDF file you want to password protect and secure from your MyBox folder.
04
After selecting the file, click on the 'Protect' button located at the top of the page.
05
A drop-down menu will appear. Click on the 'Password Protect' option.
06
Enter a strong and unique password in the provided field. Make sure to choose a password that is not easily guessable.
07
Confirm your password by entering it again in the 'Confirm Password' field.
08
Click on the 'Protect' button to apply the password protection to your PDF file.
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Once the password protection is applied, you can download the secured PDF file to your computer or share it securely with others.
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To open the password-protected PDF file, you or the recipient will need to enter the correct password.
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Remember to keep your password safe and avoid sharing it with unauthorized individuals.

By following these steps, you can easily password protect and secure your PDF files using pdfFiller's Password Protect and Secure PDF File feature. Enjoy the peace of mind knowing that your sensitive information is safe and secure!

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
Click the Select a file button above, or drag and drop a PDF into the drop zone. Enter a password, then retype it to confirm the password. Click Set password. Sign in to download or share your protected PDF.
Click the Select a file button above, or drag and drop a PDF into the drop zone. Enter a password, then retype it to confirm the password. Click Set password. Sign in to download or share your protected PDF.

#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