Lock PDF Files
Upload your PDF file and add password protection to secure it
About Indsoft24 - Your Trusted Technology Partner
Indsoft24 is a leading software development company based in Noida, India, specializing in innovative digital solutions that transform businesses.
With over 5+ years of experience and 100+ successful projects, we have established ourselves as a trusted partner for businesses seeking cutting-edge technology solutions.
Learn More About UsOur Core Services
Web Development
Custom websites and web applications built with modern technologies.
App Development
Native and cross-platform mobile applications for iOS and Android.
Why Use Our PDF Lock Tool?
100% Secure
All lock operations are processed securely. Your PDFs are never stored on our servers and are deleted immediately after processing.
Fast & Efficient
Lock PDF files in seconds. Our optimized process ensures quick results without compromising file integrity.
Completely Free
No hidden charges, no registration required. Use our lock tool as many times as you need, absolutely free.
How to Lock PDF Files
Upload PDF
Click the upload button and select your PDF file. Maximum file size: 100MB.
Set Password
Enter a strong password to protect your PDF. Make sure to remember this password.
Lock PDF
Click the "Lock PDF" button. Our system will process your file and add password protection.
Download
Your locked PDF will be ready in seconds. Simply download it to your device.