SEC
Security desk
Hashes, encodings, headers, and checks you would rather run yourself. Nothing here asks for an account.
265–288 / 915
Crypto Algorithm Selector
LiveRecommend algorithms/key sizes by use case. The result stays on this page.
Open toolPost-Quantum Readiness Checker
LiveExplain PQC algorithms and migration priority. The result stays on this page.
Open toolEncoding Detector
LiveDetect Base64/hex/URL/rot13 encodings in a string. The result stays on this page.
Open toolCertificate Decoder
LiveDecodes PEM certificates to show subject, SANs and validity. The result stays on this page.
Open toolCertificate Chain Checker
LiveVerifies intermediate and root chain order. The result stays on this page.
Open toolCertificate Expiry Calendar Generator
LiveTurn a list of certs into an expiry calendar. The result stays on this page.
Open toolCertificate Lifetime Planner
LivePlan renewal automation for 200/100/47-day lifetimes. The result stays on this page.
Open toolCertificate Transparency Search
LiveCertificate Transparency Search. Find certificates issued for a domain. The result stays on this page.
Open toolSelf-Signed Certificate Generator
LiveSelf-Signed Certificate Generator. Generate self-signed certs for labs. The result stays on this page.
Open toolDKIM Checker
LiveValidates DKIM public key records for a selector. The result stays on this page.
Open toolDKIM Key Generator
LiveGenerate DKIM key pairs and DNS records. The result stays on this page.
Open toolDMARC Policy Rollout Planner
LivePlan none→quarantine→reject with timelines. The result stays on this page.
Open toolBIMI Record Generator
LiveGenerate BIMI records and check SVG requirements. The result stays on this page.
Open toolMTA-STS Policy Generator
LiveGenerate MTA-STS policy and DNS records. The result stays on this page.
Open toolLookalike Domain Monitor
LiveGenerate typo/lookalike variants of your domain to monitor. The result stays on this page.
Open toolPhishing Email Red Flags Checker
LivePaste an email to highlight phishing indicators. The result stays on this page.
Open toolCSP Header Generator
LiveBuilds Content-Security-Policy headers. The result stays on this page.
Open toolCSP Evaluator
LiveCSP Evaluator. Find weaknesses in an existing CSP. The result stays on this page.
Open toolCORS Policy Tester
LiveCheck CORS responses for risky configurations. The result stays on this page.
Open toolCookie Security Checker
LiveCheck Secure, HttpOnly, SameSite flags. The result stays on this page.
Open toolHSTS Preload Checker
LiveCheck HSTS header and preload eligibility. The result stays on this page.
Open toolMixed Content Checker
LiveMixed Content Checker. Find HTTP resources on HTTPS pages. The result stays on this page.
Open toolWAF Rule Generator (ModSecurity/Cloudflare)
LiveWAF Rule Generator (ModSecurity/Cloudflare). Generate defensive WAF rules. The result stays on this page.
Open toolOWASP Top 10 Checklist Generator
LiveOWASP Top 10 Checklist Generator. Generate a checklist for your app. The result stays on this page.
Open tool