Convert and Lock PDF 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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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
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025

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

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:
Only used twice but each time I was pleased with the features and ease of use. The only negative is that it is difficult to save files. I had to use a two step process of saving to PDF Filler then copying to my local drive.
John L
2015-01-27
- Document load speeds need to be increased - Cannot send multiple documents for signature in one shot - Add audio feature to attach custom audio messages to documents - Integration with Google docs for collaboration - The listing feature with check boxes is old-fashioned. Use icons based on file type.
ASIF
2015-12-19
At times, it is difficult to edit the pdf the way you want. There are too many steps to take in order to do what you want with your document. Eventually, I am able to get the pdf the way I want it.
Shonda
2016-07-08
Great, just unfamiliar with how to align the form instead of having to align each individual letter. Cannot believe this is correct. Otherwise love the look and professional appearance.
Sandi G
2017-08-15
I needed to complete a form online and… I needed to complete a form online and pdffiller was the perfect solution. I was able to find my form, fill it out on line and sign it online. I had no issues.
James Coles
2022-01-08
Used pdfFiller product during free trial period, met my needs with an important document that was needed to process timely application. Being retired, just do not need entire year of the service. Great customer service to help with subscription error! Keep hiring folks like **** and more folks will enjoy dealing with issues if needed in your business. Thanks again for quick service!
Mark K
2021-12-31
The program is easy to use and powerful, and I had a great customer experience with their support team. I was stressed and they left me satisfied. 10/10 would recommend this to anyone in business.
Dom
2020-07-15
I've been very happy with this product! I've been very happy with this product! It has helped me tremendously file insurance claims and do work since my husband has been in the hospital since 5/30/20. I did the free trial but will be purchasing it for the year.
Celia S.
2020-06-27
It works really good although saving… It works really good although saving process for the PC is a bit bad because it doesn't save documents directly.
Isjan Cortes
2020-05-08

pdfFiller — a straightforward tool to Convert and Lock PDF

If you've ever met any issues with attempting to Convert and Lock PDF using online solutions only, you're not the only one. Hours were spent switching back and forth between several solutions. With pdfFiller, you can start to get your time back and complete work faster.

Why pdfFiller? It's a certified, online PDF editor that works from the cloud. Just open a browser, sign in, choose a sample, and Convert and Lock PDF instantly. Done online, the process of editing files in PDF is simple and fast, seamless actually. An advanced set of features helps you to do what you need and much more. Here are the most helpful features you can use within your documents on pdfFiller:

01
Digital signatures. Certify forms straight from your device
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Smart export. Send a file out by fax or email, transfer it to the cloud storage, or simply download a sample as one of the available formats: PDF, DOCX, XLSX, PPTX, and JPG
03
Templates. Generate reusable documents and fill them out as many times as you want
04
Fill out fields. Add to let clients to type data
05
Page management features. Rotate, add, or delete new pages to reach your objectives
06
Watermarks. Place your logo or business name on the document's pages to avoid plagiarism

pdfFiller is not only convenient but keeps the data protected. Your information is stored and transferred among servers strictly following the General Data Protection Regulation standards. Thanks to the two-factor authentication, you don't have to go another day with your data exposed to unwanted third parties.

Value your time and get started with pdfFiller for a more streamlined approach to how to Convert and Lock PDF.

Convert and Lock PDF Feature

Transform your documents easily with our Convert and Lock PDF feature. This tool not only converts your files into PDF format, but it also locks them for enhanced security, ensuring that your information remains protected while sharing or storing documents.

Key Features

Effortless conversion of various file types to PDF
Secure locking to prevent unauthorized access
User-friendly interface for quick navigation
Batch processing for multiple documents at once
Compatibility with all major operating systems

Potential Use Cases and Benefits

Protect sensitive information when sharing files
Convert documents for professional presentations
Maintain document integrity during collaboration
Share files with confidence for audits or reviews
Efficiently organize and archive important documents

The Convert and Lock PDF feature simplifies your document management. By converting and locking your files, you can easily share what you need without worrying about unwanted edits or breaches. Whether you handle financial reports, client presentations, or important contracts, this feature helps you keep everything secure and organized. You take control over your documents, ensuring that they are safe and easily accessible.

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 Use the Convert and Lock PDF Feature

The Convert and Lock PDF feature in pdfFiller allows you to easily convert your PDF documents into editable formats and secure them with password protection. Follow these simple steps to make the most of this feature:

01
Login to your pdfFiller account or sign up for a new account if you don't have one already.
02
Once logged in, click on the 'Convert and Lock PDF' option in the main menu.
03
Upload the PDF document you want to convert and lock by clicking on the 'Choose File' button. You can also drag and drop the file directly into the designated area.
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After uploading the file, select the desired output format from the available options. pdfFiller supports various formats such as Word, Excel, PowerPoint, and more.
05
If you want to add password protection to your converted document, check the 'Lock PDF' box and enter a secure password. This will prevent unauthorized access to your file.
06
Once you have selected the output format and set the password (if desired), click on the 'Convert' button to start the conversion process.
07
Wait for the conversion to complete. The time taken may vary depending on the size of the PDF document and your internet connection speed.
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Once the conversion is finished, you will be able to download the converted document to your computer or save it directly to your pdfFiller account.
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If you have added password protection, make sure to remember the password as it will be required to open the locked PDF file.
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Congratulations! You have successfully converted and locked your PDF document using pdfFiller's Convert and Lock PDF feature.

By following these steps, you can easily convert your PDFs into editable formats and ensure their security with password protection. Enjoy the convenience and peace of mind that pdfFiller's Convert and Lock PDF feature provides!

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 your PDF. Go to Protect Tab. Click Password. Enter Password. Select the Printing allowed dropdown. Select None means to prevent printing. Select the Changes Allowed dropdown. Select None -means the highest level of protection.
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.
Go to Finder > locate your file and double-click it to open it in Preview. Enter the password to unlock the PDF document. Once your PDF file is unlocked, click on File > Export as PDF > enter the file name and set its destination > hit Save. That's all, the new PDF file you just saved will no longer require a password.
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.

Convert and Lock PDF Video Review

#1 usability according to G2

Try the PDF solution that respects your time.
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