Accelerate the way you Lock PDF Files on Desktop For Free
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Discover the simplicity of processing PDFs online
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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:
its good so far however I ordered it because it said it was $10.00 a month and it turned out to be $30.00, I guess that's only if you pay for the year it would've been nice had that been made clear before I put in my cc info
2016-05-16
Provided files that otherwise would require me to physically write information in, this can be seen unprofessional to some businesses. Worth every penny
2016-11-01
The easiest way to fill out documents
PDFfiller changed how i started sending out documents. It is extremely user friendly and efficient. We are almost completely paper less.
Like anything else, figuring out everything I was capable of was confusing. However, once i started, it became so much easier than any other PDF changer I have ever used.
2018-12-04
Such a great tool!
Any PDF document is instantly editable in PDFfiller. With this app I can to edit contracts, which are signed by customers.
Perhaps they do not have a very convenient editor interface. I often can not find what I need. I hope they fix it soon.
2018-03-30
I was told by a lawyer that the cost of…
I was told by a lawyer that the cost of his writing a Consent Order would be $2000.00.
Instead, I used PdfFiller and it cost me $144 for a year's subscription with the same results.
Kind of a No Brainer.
Thank you PdfFiller.
2022-08-06
Intuitive and easy to use
Easily and quickly fill pdfs with this simple software, just be aware there is no free option other than a 30-day trial.
This software is really straightforward and easy to use. I find it intuitive and am able to edit pdfs quickly and painlessly. Adding a signature is really easy as well.
I did the free trial of this software and even though I was impressed, I didn't end up purchasing the monthly subscription due to my needs. There are options out there that are free, although they're definitely inferior in terms of functionality and user interface. So I think the cost (even though it is reasonable) ended up being not worth it for me specifically in the end. Other than that, I had no problems with the software and would recommend it to someone who uses pdf software frequently.
2022-02-22
Easy to fill
I have always been able to fill out my documents without any frustrations, and the paperwork prints out seamlessly. Thank you for such an amazing program.
2020-07-02
I have used PDF filler for not only my work, but my daughter can use it for school work as well. PDF Filler is a well priced, useful product. I highly recommend. Thanks- Kelly Johnson, Cremation Center of Birmingham, AL
2020-04-29
I'm happy with the use of the forms, however it showed a monthy price, so I was suprised when I was charged for the entire year up front. I only needed the product for a couple tax documents.
2025-03-26
Accelerate the Way You Lock PDF Files on Desktop
Securing your PDF files should be straightforward and efficient. With our feature, you can easily lock your PDFs, ensuring that your sensitive information remains protected. Whether you are a professional handling confidential documents or a student organizing your notes, this tool brings peace of mind.
Key Features
Quickly lock multiple PDF files at once
Set customizable passwords for added security
User-friendly interface for seamless operation
Preview locked files without unlocking
Compatibility with various desktop operating systems
Use Cases and Benefits
Protect personal documents from unauthorized access
Share important files with clients while maintaining confidentiality
Secure academic materials for students and educators
Avoid data breaches in business environments
This feature addresses your need for a reliable way to protect your documents. By locking your PDFs, you can prevent unauthorized editing and downloading. Feel confident in sharing your files, knowing that they are secured. Enhance your productivity and safeguard your information with ease.
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 in Windows 11?
Go to File > Info > Protect Document > Encrypt with Password.
Can you lock PDF files?
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 do I Encrypt a PDF in Windows 11?
1. Open the PDF and choose Tools > Protect > Encrypt > Encrypt with Password. 2.
Can you password protect a file in Windows 11?
Windows 11 doesn't have a feature to protect a folder with a password because the account is already protected with your profile credentials. However, you can use the virtual drive and BitLocker features to create a drive you can secure with a password, which works similarly to a password-protected folder.
Video instructions on how to Lock PDF Files on Desktop
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