JA3 Fingerprint: See Your TLS Signature

Every browser has a unique way of talking to secure websites. Use our tool to see your JA3 MD5 hash and find out what your "secret handshake" says about you.

Quick Tool Fact

A JA3 Fingerprint is a unique ID created from your browser's security settings. Unlike an IP address, this ID usually stays the same even if you use a VPN, allowing websites to recognize your device across different networks.

Protocol Version

TLS 1.2

Ciphers (Codes)

11 Active Suites

SSL Features

15 Extensions

TLS_Fingerprint_Scanner

Your Unique JA3 Hash (MD5)

5c38df56e8eb8728afac571bdcd847e1

Raw Fingerprint String

771,4865-4866-4867-49195-49199-49196-49200-52393-52392-49171-49172,0-23-65281-10-11-35-16-5-13-18-51-45-43-27-21,29-23-24,0

What is a JA3 Fingerprint?

Imagine you go to a fancy party. When you enter, you give a special handshake to the host. Based on that handshake, the host can tell if you are a real guest or someone wearing a mask. JA3 Fingerprinting is that secret handshake for the internet. It was created by security experts at Salesforce to identify exactly which browser or program is trying to connect to a website.

Can a VPN hide this?

The short answer is No. A VPN changes your IP address (your location), but it doesn't change your "handshake." If you use the same Chrome browser on a VPN, your JA3 Hash will remain exactly the same. This is why websites can still track you even if you hide your IP.

How is the JA3 Hash made?

Our tool, AirOI Checker, looks at five specific things in your browser's "Hello" message to create your ID:

  • TLS Version: Like using the 1.2 or 1.3 version of the handshake.

  • Cipher Suites: A list of secret codes your browser knows how to read.

  • Extensions: Extra tools your browser uses to stay safe.

Stopping Bots and Hackers

Security systems use JA3 to spot "imposters." For example, a Hacker Bot might pretend to be "Google Chrome," but its JA3 handshake will look like a "Python Script." When the server sees this mismatch, it blocks the bot instantly. This is how sites like Cloudflare stop attacks.

Frequently Asked Questions

Does every browser have a different JA3?

Not every single person, but every browser type is different. Chrome on Windows has a different fingerprint than Firefox on a Mac. If you update your browser, your JA3 will also change.

Is JA3 fingerprinting bad for my privacy?

It’s a double-edged sword. It helps stop hackers and bots, but it also means websites have a "new way" to track you without using cookies or your IP address.

Is this tool free for developers?

Yes! AirOI Checker provides this tool 100% free so developers can test their own scripts and see what kind of fingerprint they are leaving behind.