HSTS Preload Header Auditor
Verify Strict-Transport-Security header directives for Chrome HSTS preload list eligibility.
100% Client-Side · In-Memory Only
Interactive Tool Workspace
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How to Use HSTS Preload Header Auditor
- Open the HSTS Preload Header Auditor interface above.
- Enter your input data or configure desired options.
- Click execute to run client-side or communicate directly with provider endpoints.
- Copy the output result, download data, or export configurations.
Features & Guarantees
- 100% Client-Side Engine — runs locally with zero uploads to debug.tools servers.
- Private and secure: all processing runs locally without sending data to a server.
- No accounts, signups, or usage limits.
Frequently Asked Questions
Is HSTS Preload Header Auditor free to use?
Yes, 100% free with no limits or subscriptions. All logic and computation execute directly in your web browser.
Does debug.tools store my data or inputs?
No. All processing occurs entirely in your browser memory. We never store, transmit, or log your inputs.