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
Note: Integration described on this webpage may temporarily not be available.
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Discover the simplicity of processing PDFs online
Upload your document in seconds
Fill out, edit, or eSign your PDF hassle-free
Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
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
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:
I like being able to fill in forms from online. $72 is too much for this as I only pay $30 for several other internet programs. There should be a refund.
2017-12-03
PDFfiller is fast and easy to use. I load my documents, make corrections, save and print in a matter of minutes. I use PDFfiller often & recommend it highly.
2019-07-25
it was a great experience. But im not a business and only need was to keep track of all my medicines. the military clinic will provide me with a blank form for this purpose.thanks for allowing me the use of the free 30 days trial.
2019-12-10
Easy to use online PDF editor
This is an easy to use app, which allows the editing of PDF files from any source with multiple tools to work on any pdf document of the company, it is a solution for filling out forms, it allows inserting comment or image. I can also combine, divide and reorder, cut, place header and footer, watermark text or image in my documents and has a preview panel. As it is an online editor it does not consume resources on my pc and it is compatible with all browsers
You can edit documents from any device but it is mandatory to have an internet connection to use it, so you can not have it as the only editing tool.
2018-06-28
There was a big learning curve for me, but think I have a fair handle on it now
There was a big learning curve for me, but I think I'm getting the hang of it now, once I've finally finished a Fax Form cover sheet.
2024-02-16
It is easy, so relax and just do what you need to do.
I am so very, very pleased with how easy the program is to use. I tried others for this emergency situation and was frustrated out of my mind with the complicated programs. This one is easy, easy and very effective.
2023-10-15
So helpful. I can fill out the form instead of scanning, printing, filling out, and then scanning again so that I can send it back. I did try other programs... this one is by far the very best.
2023-03-30
How PDFfiller helped me
PdfFiller has saved me alot of time and money, I've used PdfFiller to sign documents for work and get them signed. Navigating through the software is easy, it allows you to not only upload the document needed to sign but email and a host of other different options which would definetly come in handy for those who are not tech savy and up to date with using the internet that well. Pdffiller has been not only a life saver but a time and money saver too. It is great for people who may not have to sign alot of documents or have to especially with the trial thats offered. I would highly recommend trying the program out.
I love the fact that PdfFiller is easy to navigate and it helps maintain formatting which is very important to the way people retain information and it keeps it just as it should be. PDf also allows you to implement watermarks and digital signatures which are very viable in the business industry. I also love the fact that software allows you a free trial so if your not satsfied your not obligated to stick to the program.
I cant really think of any cons about Pdffiller its very easy to use and worth the price.
2023-02-27
Outstanding customer service
So I apparently signed up for the 30 day trial, but with memory issues forgot as I only needed for one thing. However, 30 days later I got charged. Now, although it was fantastic and easy to use for that one thing a month ago, it’s not something I use a lot of, hence why I forgot. Anyway, after contacting the customer services dept through their email, they very quickly responded within 30 minutes and after hearing my story, gave a full refund. I’m sorry I don’t need to use the program as it was very easy to edit my PDF and convert etc, but I would highly recommend this company’s PDFFiller software.
2021-02-19
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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