A self-signed SSL certificate is an SSL certificate that a website creates and signs for itself. There\u2019s no trusted certificate authority sitting in the middle to verify it. The website basically says, \u201cYep, this certificate belongs to me,\u201d and signs the document itself.<\/p>\n
The technical part is similar to a normal SSL certificate. Your server creates a certificate containing information about its identity and its public key. It then signs that certificate using its own private key.<\/p>\n
The problem appears when your browser receives it. Chrome or another browser doesn’t automatically trust the certificate because the signature comes from the same server. There\u2019s no trusted third party confirming that the website really is what it claims to be.<\/p>\n
This distinction matters more than people think. A self-signed certificate can protect data while it travels between your device and the server. But it doesn’t give visitors the same identity check provided by a certificate issued by a trusted certificate authority.<\/p>\n
Think of it like receiving an ID card that someone printed for themselves. The card exists. The information might even be accurate. You still have no independent reason to trust it.<\/p>\n
For a public website, using one is usually a poor choice. Visitors don’t want a browser warning every time they open your site, and some browsers will block or strongly discourage access until the warning is handled.<\/p>\n
Internal systems are different. A company can create its own certificate and manually configure its computers to trust that certificate. That’s perfectly reasonable when the people and devices using the system are controlled by the same organisation.<\/p>\n
\u2022 Testing environments are a common home for them, especially when developers don’t want to buy or request a certificate just to test a new feature.<\/p>\n
\u2022 An internal company server can use one quite comfortably, provided the organisation has configured its devices to trust it.<\/p>\n
If you’re running a public website, use a certificate issued by a trusted certificate authority. There\u2019s little reason to make visitors deal with a warning when trusted SSL certificates are widely available.<\/p>\n
For development or private systems, though, self-signed certificates make sense. You control the environment, you know where the certificate came from, and you can configure your devices to trust it.<\/p>","protected":false},"excerpt":{"rendered":"
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