HTTP & Security Header Tools

Mixed Content Checker

Mixed Content Checker scans pasted HTML in your browser for insecure http assets and flags active resources like scripts and passive ones like images.

Client-sideRuns entirely in your browser — your data never leaves your device.

Mixed Content Checker is a free HTTP & Security Header Tools utility that runs entirely in your browser — nothing you enter is uploaded.

Mixed-content scan

How to use Mixed Content Checker

  1. Drop your text into the field at the top of Mixed Content Checker.
  2. Tune the Paste page HTML (or an asset list) control before you check.
  3. The result is computed live in your browser as you edit the input.
  4. Use Copy to keep or reuse the result.

About this tool

Mixed Content Checker is a static, client-side tool with no backend. Mixed Content Checker handles your input locally and returns the result instantly, with no sign-up.

Because it runs on your device, it is fast and private and works offline once loaded. No data is sent anywhere, so it stays fast and private by default.

Frequently asked questions

What does Mixed Content Checker do?

Mixed Content Checker lets you check your input right in the browser using the Paste page HTML (or an asset list) control, with the result shown instantly and nothing uploaded.

Is Mixed Content Checker free to use?

Yes — Mixed Content Checker is completely free, with no usage limits.

Does Mixed Content Checker upload my data?

No — Mixed Content Checker processes everything locally in your browser, so nothing you enter is uploaded or stored.

Does Mixed Content Checker work offline?

Once the page has loaded, Mixed Content Checker keeps working with no network connection.

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