Free tools

Six things we kept rebuilding by hand, made properly and given away. Each one runs entirely in your browser. No account, no upload, and nothing you type is transmitted to us or to anyone else.

Email authentication

SPF & DMARC record generator

Build valid SPF, DMARC and CAA records for your domain, with a live count against the ten-lookup SPF limit.

HTTP headers

Security headers generator

Generate HTTP security header config for Apache, nginx, Caddy, Cloudflare, Netlify or IIS, with warnings on the settings that can break a site.

Content Security Policy

CSP builder & analyser

Build a Content-Security-Policy from what your site actually loads, or paste an existing one and have it explained in plain English.

Process

Incident response plan builder

Answer a dozen questions and get a one-page incident response plan you can save, print and hand to an auditor. Runs entirely in your browser.

Process

Vendor & DPA register

List every vendor that touches your customer data, track which have signed DPAs, and export as CSV or Markdown. Runs entirely in your browser.

Crawling & SEO

Server log analyser

See which crawlers fetch your site, what they waste time on and what fails for them. Reads Apache and nginx logs in your browser. No upload, no account, no line limit.