Convert Word to PDF and Lock PDF for Windows 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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Last updated on Dec 12, 2023

Edit, manage, and save documents in your preferred format

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Convert documents with ease

Convert text documents (.docx), spreadsheets (.xlsx), images (.jpeg), and presentations (.pptx) into editable PDFs (.pdf) and vice versa.
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Start with any popular format

You can upload documents in PDF, DOC/DOCX, RTF, JPEG, PNG, and TXT formats and start editing them immediately or convert them to other formats.
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Store converted documents anywhere

Select the necessary format and download your file to your device or export it to your cloud storage. pdfFiller supports Google Drive, Box, Dropbox, and OneDrive.
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Convert documents in batches

Bundle multiple documents into a single package and convert them all in one go—no need to process files individually.
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Preview and manage pages

Review the documents you are about to convert and exclude the pages you don’t need. This way, you can compress your files without losing quality.
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Protect converted documents

Safeguard your sensitive information while converting documents. Set up a password and lock your document to prevent unauthorized access.

How to quickly convert and compress your PDF?

Upload your document

Upload a document from your device, cloud storage, email, or URL.
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Use the converter tool

Select your document and click Convert .
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Select format and destination

Decide on the file type and where you want to save the converted document—on your device or in your cloud storage.
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Manage pages and additional settings

Once everything is set, you can access advanced settings to compress a document by excluding unnecessary pages, set passwords, and select other options.
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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
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PDFs edited per month
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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:
What do you like best?
Ability to add notes to PDFs for my clients. It really does help answer questions for them much faster and help them understand the document better.
What do you dislike?
I wish I could merge and rearrange documents without it costing more to upgrade to do so. Would also be nice if If could set two password when securing a file. One for client and my master password
What problems are you solving with the product? What benefits have you realized?
Being able to mark up pdf documents for my clients that otherwise I could not. I like the pen option to call out important numbers for them to review. Being able to highlight where there signature is needed is an added plus
Consultant in Financial Services
2018-01-17
PDFfiller is almost as good as Adobe PDFfiller makes PDF editing simple and quick. It's almost as good as Adobe itself. If you don't have Adobe, then here's you substitute. It's a simplistic and quick online PDF editor. You basically upload your PDF file, then if provides to all of your needs from: inserting text, erasing text and other modification options. None at the moment because I appreciate using it.
C.F. J.
2019-03-13

Convert Word to PDF and Lock PDF for Windows

Unlock the power of easy document management with our Convert Word to PDF and Lock PDF feature for Windows. This tool simplifies the transition from Word documents to secure PDF files, ensuring your content is professional and protected.

Key Features

Convert Word documents to PDF quickly and easily
Secure PDF files with password protection
Maintain original formatting during conversion
User-friendly interface for seamless navigation
Batch processing for multiple documents at once

Potential Use Cases and Benefits

Share documents confidently with colleagues and clients
Protect sensitive information during file transfers
Archive important documents in a universally accessible format
Improve collaboration by converting and locking files effortlessly
Streamline your workflow with batch processing capabilities

This feature addresses your need for secure document handling. By converting your Word files to PDF, you ensure that the formatting remains intact. Plus, adding password protection prevents unauthorized access, giving you peace of mind. Whether you are sharing reports, contracts, or personal documents, this tool helps you achieve your goals efficiently.

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 Convert Word to PDF and Lock PDF for Windows

Converting Word documents to PDF and locking PDF files are two useful features offered by pdfFiller for Windows. Follow these step-by-step instructions to make the most of these features:

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Open the pdfFiller application on your Windows device.
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Click on the 'Convert' tab located at the top of the screen.
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Select the 'Word to PDF' option from the dropdown menu.
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A new window will appear. Click on the 'Choose File' button to select the Word document you want to convert.
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Once you've selected the file, click on the 'Convert' button.
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pdfFiller will now convert your Word document to PDF format. This may take a few moments depending on the size of the file.
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After the conversion is complete, you will be able to download the converted PDF file to your computer.
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To lock the PDF file, go back to the pdfFiller application and click on the 'Lock' tab.
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Select the 'Lock PDF' option from the dropdown menu.
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In the new window, click on the 'Choose File' button to select the PDF file you want to lock.
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Once you've selected the file, click on the 'Lock' button.
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pdfFiller will now apply a password to your PDF file, ensuring that only authorized individuals can access it.
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You can now download the locked PDF file to your computer and share it securely.

By following these simple steps, you can easily convert Word documents to PDF and lock PDF files using pdfFiller for Windows. Enjoy the convenience and security of these features!

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 Locked PDF Drag and drop your password-protected PDF into this tab. If your PDF file has an open password, then you will get a new window to ask for the open password. Just enter the correct password to open it. If your PDF file has the permission password, then you can open it in Chrome directly.
1In the File menu, select the Info tab.2Within the Info tab select the Protect Document button.3Click Encrypt with Password.4Enter and confirm your password, then click OK.5Your document is now protected.
Add a password to Microsoft Office Click the File menu, select the Info tab, and then select the Protect Document button. Click Encrypt with Password. Enter your password then click OK. Enter the password again to confirm it and click OK.
Select the file or folder you want to encrypt. Right-click the file or folder and click Properties. On the General tab, click the Advanced button. Check “Encrypt contents to secure data” option. Click Apply and then OK.
With the document you wish to password protect open, select File > Info. Select the Protect Document option (icon with a lock). Choose To encrypt with password. Type the password you wish to use, then select OK. Type the password again, then select OK.

How to Convert Word to PDF and Lock PDF for Windows - video instructions

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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