Materialize CSS字体混合内容警告：字体请求来源排查问询

Hey there, let's break down why you're seeing that mixed content warning for the Materialize Roboto font, even though you didn't explicitly link to the Materialize website.

The Root Cause: Relative Paths + External CSS Sources #

The key here is how browsers resolve relative URLs in CSS files. Take the @font-face snippet you shared:

@font-face {
  font-family: "Roboto";
  src: local(Roboto Thin), url("../fonts/roboto/Roboto-Thin.woff2") format("woff2"),
       url("../fonts/roboto/Roboto-Thin.woff") format("woff");
  font-weight: 100;
}

That ../fonts/roboto/... path is relative to where the CSS file is hosted, not your website's domain.

So if you're loading the Materialize CSS file from an external HTTP source (like the unencrypted Materialize website URL), the browser will resolve that relative path to the Materialize domain. For example:

• If your CSS link is <link rel="stylesheet" href="http://materializecss.com/css/materialize.min.css">
• The browser turns ../fonts/roboto/Roboto-Bold.woff2 into http://materializecss.com/fonts/roboto/Roboto-Bold.woff2

Since your site is likely using HTTPS, this triggers the mixed content warning (loading HTTP resources on an HTTPS page).

How to Track & Fix It #

• Check your CSS import first: Look for the <link> tag that loads Materialize CSS in your HTML. If it's pointing to an HTTP URL (like the Materialize website's unencrypted address), that's the culprit. Switch it to an HTTPS CDN link or use a local copy of the CSS file.
• Verify local file paths: If you're using a local Materialize CSS file, make sure your font files are in the correct location. The ../fonts/roboto/ path means the fonts folder should be at the same level as your CSS folder. For example:

  your-project/
  ├── css/
  │   └── materialize.css
  └── fonts/
      └── roboto/
          ├── Roboto-Thin.woff2
          ├── Roboto-Bold.woff2
          └── (other font files)
  

  If the fonts are missing or in the wrong place, double-check your download of Materialize—make sure you grabbed the full package that includes the font files, not just the CSS.

Hope that clears up where that unexpected font request is coming from! Let me know if you need help narrowing it down further.

内容的提问来源于stack exchange，提问作者Dan