PQC Checker

by nico2k4@gmail.com · Privacy & Security

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Check if websites support Post-Quantum Cryptography

Users

+4 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#133K

#110K among extensions

Version

1.0

updated 22 Oct 2025

Users

monthly, 12 months

Latest, 15 Oct 2026: 28 usersMove the mouse over the chart for any month

Ratings count

monthly, 12 months

Latest, 15 Oct 2026: 2 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About PQC Checker

This extension is for those who want to know if the site they are currently on is post quantum cryptography safe (PQC). With the advancement of quantum computing and the accessibility that comes with it, you should know if the site you are on is safe for when quantum computing can crack anything! This is a great way of future proofing and ensuring your sensitive information is safe for the future!