Fix · Express / Node

Fix “HTTP Strict Transport Security (HSTS)” on Express / Node

Add: Strict-Transport-Security: max-age=63072000; includeSubDomains; preload

res.setHeader("Strict-Transport-Security", "max-age=63072000; includeSubDomains; preload");

Verify the fix

Re-run the HTTP Strict Transport Security (HSTS) check after deploying. Test config changes in staging first and keep a rollback: a wrong header can break a site faster than a missing one.

Other stacks: nginx · Apache · Caddy · Cloudflare

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