Archive tool

Password Protect ZIP File

Add AES-256 password encryption to any ZIP archive. Only people with the password can extract the contents.

PrivConvert
Privacy-first conversion
No files stored
AES-256 encryption
Deleted instantly
No sign-up needed

Complete the security check to begin

Secure your ZIP archives

Add AES-256 encryption to any ZIP file. Recipients will need the password to extract the contents.

How to Use Password Protect ZIP File Online - Free & Secure

Add AES-256 password protection to any ZIP file. Free, private, no files stored.

1
Upload your file

Drag and drop your file into the upload area or click to browse your device. Files up to 250 MB are accepted and sent over an encrypted HTTPS connection.

2
Processed securely in memory

Your file is processed in an isolated, in-memory environment on our servers. It is never written to disk and never mixed with other users' files.

3
Download your result

Your result is ready in seconds. Download it, and your file is purged from memory immediately - we keep no copy, backup, or cache.

Why Choose PrivConvert?

Unlike other online tools that upload your files to remote servers, store them for days, and may use them for AI training or data mining, PrivConvert was built with privacy as the foundation.

Zero data retention

Files are processed in volatile memory (RAM) and immediately purged. Nothing is ever written to disk or backed up.

Encrypted transfers

All uploads and downloads are encrypted with TLS 1.3. Your files cannot be intercepted in transit.

No account required

Use any tool instantly without signing up, providing an email, or creating a profile. No tracking cookies, no user profiling.

Works on any device

Compatible with Windows, macOS, Linux, iOS, and Android. No plugins or desktop software needed - just a modern web browser.

Trusted by Thousands of Users

PrivConvert processes thousands of file conversions every day. Our commitment to privacy and security has made us the go-to choice for professionals, developers, and privacy-conscious users worldwide.

250 MB Max file size
200+ Conversion tools
0 sec File retention
100% Free to use

Frequently Asked Questions

Is Password Protect ZIP File Online - Free & Secure free to use?

Yes, completely free with no limits, no sign-up, and no hidden fees. Use it as many times as you want.

Is my data safe?

Your file is processed in an isolated, in-memory environment on our servers, sent over an encrypted HTTPS connection, and permanently deleted the moment your download is ready. It is never written to disk, stored, or shared.

Does it work on mobile devices?

Yes. The tool works on any device with a modern web browser - smartphones, tablets, laptops, and desktops.

Do I need to create an account?

No. You can use the tool instantly without signing up, providing an email, or creating any profile.