Last updated on
Sep 20, 2025
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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Every PDF tool you need to get documents done paper-free
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.
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.
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.
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.
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.
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
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average user rating
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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:
I have found the PDF filler to be very useful in completing some legal documentation needed. It was easy to use and the final results were professional.
2017-05-01
It is convenient, ensures legibility and a professional appearance, and is easy to use. I have used it only for basic functions - i.e. filling in blank lines. I still need to explore what else it can do.
2017-12-10
I love it but when I was trying to edit document I could only click and erase some fields. I had to use the eraser for the rest. But overall great product.
2018-11-27
What do you like best?
I can open any file anywhere, edit and email or fax without having to print anything. I use this feature all the time
What do you dislike?
A couple of the functions are a bit clunky
What problems are you solving with the product? What benefits have you realized?
I have terrible handwriting and I need to print on PDFs constantly.
I can open any file anywhere, edit and email or fax without having to print anything. I use this feature all the time
What do you dislike?
A couple of the functions are a bit clunky
What problems are you solving with the product? What benefits have you realized?
I have terrible handwriting and I need to print on PDFs constantly.
2019-01-30
With PDF Filler, you can create and organize documents in one place. The only thing they need is an invoice based on the work order info. Apart from that, it's great. Definitely recommend PDF Filler. This US Legal Forms feature helps a lot. PDF Filler also has reasonable prices.
2023-04-16
I used the free trial to compile rent due ledgers for the ************** requirement. I did not cancel on time and was charged $180 dollars. I reached out to support and ****** returned my email within minutes. I provided my information to customer service specialist ****** and he fixed the problem. There wasn't any back and forth emails. It was straight to the point. Thank you ****** for being quick and professional.
2022-04-05
PDFfiller
I am happy with the software and it helps me to speed up my paperwork and save my time.
What I like most about PDFfiller is that it is very easy to fill out the form electronically. It fills out any blank space of the PDF form from the loaded document.
No negative review on this software. The software is so easy and simple to use and I use it at work when I need it.
2020-11-27
I had an issue with accessing a form shared by a colleague. I wrote to the PDFfiller support team and received their response very swiftly. The instructions received via email were very clear and easy to follow. I was able to fix the issue within a very short time. I'm really impressed by the efficiency and quality of customer support.
2020-11-02
easy to use and there are a lot of options to have...
easy to use and there are a lot of options to have things mailed, emailed, faxed, etc right with a click of a button and entering information. It does have a fee for this BUT it is SUPER convenient so honestly its a very small price to pay to not have to worry about all the extra work i would have to do myself.
2020-05-20
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.
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.
09
Once the password protection is applied, you can download the secured PDF file to your computer or share it securely with others.
10
To open the password-protected PDF file, you or the recipient will need to enter the correct password.
11
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
How do I password protect a PDF file for free?
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.
How do I password protect a PDF file for free?
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.
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