Lock PDF and Encrypt PDF for Desktop 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
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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:
I has made my job easier. I use numerous forms as a Clinical Manager for a Home health agency that does not utilize EMR. I am now able to fill out these forms in half the time. I don't have to look through countless paper folders to locate my forms, just locate on my desk top, complete and print!
Marla R
2018-06-19
PDFfiller is making filling out forms much more streamlined. As a non-profit organization we try to look for things make the running of it more efficient. PDFfiller has made this possible. No more trying to create the forms and fill in the tiny blocks. Just create, insert, and print.
Kristie
2019-07-24
Editing PDFs has never been easier I needed forms to be editable so members could easily fill things out and return them for us to add to our electronic database. PDFfiller has a variety of helpful tools, but my most favorite feature is making a PDF form editable! Game changer. The learning curve with PDF filler was a little bit more cumbersome than just opening a PDF and being able to edit it.
Emily B.
2019-10-09
Works well with scanned pdfs to You can wite-out on the page when you need to change some data. You can highlight, it has most features like other pdf programs. The time it takes to upload takes longer than with adobe acrobat.
Lindsey H.
2019-03-12
Great experience! I was able to get the rental applications done for my house rental. Super easy to use. Clear instructions, I found enjoyable to use this software. I'm not that good with computers but I was able to use it without much difficulties. I can't think of anything that I didn't like. I had to take a little more time to find out how to get confirmation of my forms I sent, other than that it was fast and easy.
Carmen V.
2017-11-14
It worked great with one exception. On my form the lines that I highlighted did not highlight everything in the printed version. Other than that, it worked great.
Henry G
2023-12-09
Plenty of useful options Plenty of useful options, convenient design. I like the feature of editing pdf files online ans storing them in the cloud
Timur Kabizhanov
2021-06-13
This is my first time using pdfFiller and I m excited about using the other features that it offers. I truly want to gain all the functions and capabilities that are at hand.
Anthony W
2021-04-02
This is truly a smooth This is truly a smooth, easy straightforward service. I searched long and hard to find a service like this to type my pdf. and am truly grateful!!
PRINCE CLARK
2021-01-22

Lock PDF and Encrypt PDF for Desktop

Secure your important documents with our Lock PDF and Encrypt PDF feature. This tool allows you to protect your files from unauthorized access, ensuring that your sensitive information remains safe.

Key Features

Apply password protection to your PDFs with custom encryption levels
Prevent unauthorized printing, copying, and editing of your documents
Simple and user-friendly interface for easy navigation
Batch processing to secure multiple files at once
Compatible with various PDF formats
Create secure copies without altering original documents

Potential Use Cases and Benefits

Protect confidential corporate information and client data
Secure personal documents like tax returns and identification proofs
Ensure compliance with legal and regulatory guidelines
Share sensitive files safely with colleagues or clients
Prevent data breaches and unauthorized access to files

Using our Lock PDF and Encrypt PDF feature can solve your problem of document security. By encrypting your files, you can confidently share them without worrying about prying eyes. This tool gives you control over who can access your information, letting you focus on what truly matters.

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!

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.

How to Lock PDF and Encrypt PDF for Desktop - video instructions

#1 usability according to G2

Try the PDF solution that respects your time.
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