DMARC, SPF and DKIM checker
Free DMARC, SPF and DKIM checker. Counts SPF DNS lookups against the RFC 7208 limit of 10, probes 28 DKIM selectors, parses the DMARC policy and grades the domain A to F.
Each one runs on the same API this site sells, with no signup and no watermark. If a tool solves your problem once, the endpoint behind it solves it a thousand times.
Free DMARC, SPF and DKIM checker. Counts SPF DNS lookups against the RFC 7208 limit of 10, probes 28 DKIM selectors, parses the DMARC policy and grades the domain A to F.
Free SSL/TLS certificate checker: issuer, subject alternative names, protocol, cipher, chain length and the exact number of days before expiry.
Free HTTP security headers test: HSTS, Content-Security-Policy, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, COOP and CORP, scored A to F.
Free DNSBL lookup across Spamhaus ZEN, SpamCop, Barracuda, SORBS, PSBL, WPBL, UCEPROTECT and more, with the listing reason when the list publishes one.
Free website screenshot tool. Full-page or viewport capture, desktop or mobile, cookie banners hidden, PNG download.
Free QR code generator: URL, text, Wi-Fi credentials, vCard and more. Custom colours, PNG or SVG, no watermark, no expiry.
Free image compressor for JPEG, PNG, WebP and AVIF. Shows the exact byte saving, strips EXIF and GPS data, no signup.
Free PDF merge tool. Up to 20 files, order preserved, nothing stored, no signup and no watermark.