#headers 2
2 services tagged "headers" — each with a free tier or trial. Limits and card requirements are in the cards.
- securityheaders.com Проверка заголовков · без лимитов · бессрочно
- Mozilla Observatory Оценка безопасности сайта · лимит сканов/час · бессрочно
See also
free-tier.hub · snapshot 2026-11-05 · limits change — check the provider's official page