CheckMyHTTPS ensures that your secured WEB connections (HTTPS) are not intercepted (neither decrypted, nor listened, nor modified). We have created several simple tools that use this method : Firefox & Chromium-based WEB browser add-ons and an Android app.
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Firefox extension |
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Chrome extension |
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Edge extension |
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Opera extension |
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When browsing on secured sites ("https://..." websites), you can check the security status by clicking on the extension icon 
.
- The icon is green
: your connection is not compromised; - The icon is red
: your connection is considered very risky (hijacked, modified, listened); - The icon is gray
: the verification is impossible (check server is unreachable, network error); - The icon is black
: the verification is in progress.
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├── Chromium/ # Chromium-based browser extension
├── Mobile_App/ # Android app
├── server-php/ # Check server (backend)
└── webextension/ # Firefox extension
The CheckMyHTTPS extension requires to send only two parameters to the check server :
- The domain name of the visited website;
- The IP address of the visited website. You have free choice regarding the website to check.
Moreover, we give you the possibility to be free regarding the check server as you can make and host your own.
A secure website (HTTPS) justifies its identity with your browser by sending a certificate validated by a recognized certification authority. Interception techniques, to be able to work, dynamically forge false certificates (a bit like a fake identity card). The method we propose to you, verifies that the certificate you receive is the one issued by the server.
All explanations are detailed on the https://checkmyhttps.net project website.
Original idea & project management: Richard REY (aka Rexy)
Previous developers : Sylvain BOUTEILLER, Adrien SCHNEIDER, Cyril LEBLAY, Raphaël PION, Hugo MEZIANI, Tom HOUDAYER, Catarina DE FARIA, Quentin COLLART, Mathis CADIO, Ghassen LAHDHIRI, Ahmed BOUSRIH, Mehdi BELAJOUZA
Logo: Clément SICCARDI
GPL v3