Headers Checker Documentation

Review HTTP response headers for caching, content type, security, and debugging information.

The tool validates the public input, performs the requested browser-safe check, and displays the response on this page.

• Quickly check or generate headers checker output.
• Troubleshoot a website & domain task without an account.

Input

A public website, domain, or network value required by the check.

Output

A result shown in the browser that can be reviewed or copied where supported.

• Results depend on the input, browser, network, and external service involved.
• This tool is informational and does not replace specialist diagnostics.

The requested public target is sent to SiteIndex only as needed to perform the check. SiteIndex does not require an account or intentionally store the target as a report. See the Privacy Policy for analytics and retention details. Read the Privacy Policy.