What Is an HTTPS Checker?
This tool checks several genuine, real signals about your current connection's security: whether the page you're viewing was loaded over encrypted HTTPS or plain unencrypted HTTP, whether your browser considers this a "secure context" (which unlocks certain sensitive APIs), and whether any resources on this specific page were actually loaded insecurely even though the page itself uses HTTPS - a real, common security issue called mixed content.
How to Use the HTTPS Checker
- Load this page - every check runs automatically and reflects your current connection.
- Check "Protocol" to confirm whether you're on HTTPS or plain HTTP.
- Check "Mixed Content Check" for any insecure resources loaded alongside this secure page.
- To check a different website's HTTPS status, look at your browser's own address bar padlock icon while visiting that site directly.
How It Works
The protocol check reads location.protocol directly, which reflects exactly how this page
was loaded. "Secure Context" reads the browser's own window.isSecureContext flag, which
browsers set based on whether the current page meets the security requirements needed to access certain
sensitive APIs. The mixed content check uses the Resource Timing API to review every resource this specific
page actually loaded - scripts, images, stylesheets, and more - and flags any that were requested over
plain http:// despite the page itself being served over HTTPS, a genuine and directly
observable security signal rather than a guess.
Understanding Your Results
- Protocol shows HTTPS, Secure Context shows Yes - your connection to this page is properly encrypted and meets the browser's security requirements.
- Protocol shows HTTP - your connection to this specific page is not encrypted; avoid entering sensitive information on any page in this state.
- Mixed content resources detected - even though the page itself is HTTPS, at least one loaded resource was insecure, which can expose that specific resource to tampering and typically triggers a browser warning indicator.
- Secure Context shows "No" despite HTTPS - uncommon, but can happen in certain embedded or sandboxed contexts with additional restrictions beyond just the protocol.
Browser Limitations
This tool can only inspect the connection and resources for the specific page you're currently viewing - it cannot check a different website's HTTPS status without you actually navigating there, since browsers don't allow one page to inspect another page's connection security for privacy and security reasons. It also can't display detailed certificate information (issuer, expiration date, etc.), which requires using your browser's own built-in certificate viewer, typically accessible by clicking the padlock icon in the address bar.
Common Mistakes to Avoid
- Assuming HTTPS alone guarantees a trustworthy website - HTTPS confirms your connection is encrypted, not that the website's content or operator is legitimate; both matter separately.
- Ignoring mixed content warnings - insecure resources loaded on an otherwise secure page can still be intercepted or tampered with, undermining part of HTTPS's protection.
- Expecting this tool to check other websites - visit the specific site directly and check your browser's address bar indicator for that page's connection status.
Frequently Asked Questions
Does HTTPS mean a website is safe and trustworthy?
HTTPS only confirms your connection to the site is encrypted, protecting data in transit - it doesn't verify the website's content, legitimacy, or intentions, which are separate considerations entirely.
What exactly is "mixed content" and why does it matter?
It's when a secure HTTPS page loads some resources over insecure HTTP; those specific insecure resources can potentially be intercepted or altered in transit even though the main page connection itself is encrypted.
Can this tool check the HTTPS status of a different website?
No, browsers only allow a page to inspect its own connection security for privacy reasons; visit the other site directly and check your browser's address bar indicator instead.
What is a "secure context" and why does it matter?
It's a browser security classification that certain sensitive APIs (like camera, microphone, and clipboard access) require before they'll function, generally requiring HTTPS as a baseline.
Is any data collected by this checker?
No, all checks read information already available to your browser about the current page and are displayed locally without being transmitted anywhere.
Conclusion
A genuinely encrypted connection with no mixed content is the expected baseline for any modern, secure website. For a related check of your secure context specifically, see the Secure Context Checker.