Guides
DNS Records Explained
Learn nameservers, A, AAAA, CNAME, MX, TXT, TTL, and DNS propagation, plus how to change web hosts without breaking email.
Read the guide →HTTPS and SSL Certificates
Learn what TLS certificates prove, DV versus OV and EV, free auto-renewal, domain validation, mixed content, HTTPS redirects, and expiry checks.
Read the guide →301 vs 302 Redirects
Choose 301, 302, 307, or 308 redirects for domain moves, www vs non-www, query strings, and avoid chains, with .htaccess examples.
Read the guide →robots.txt and XML Sitemaps
Learn what robots.txt can and cannot do, noindex versus disallow, sitemap format, search console submission, and common crawl mistakes.
Read the guide →Website Speed Settings
Speed up a site with caching headers, gzip and Brotli, image sizes, lazy loading, font choices, fewer scripts, and free measurement tools.
Read the guide →Email Authentication with SPF, DKIM, and DMARC
Set up SPF, DKIM, and DMARC with example DNS records, respect the SPF lookup limit, and move policy from none to quarantine or reject.
Read the guide →Meta Tags, Favicons, and Social Previews
Set title and description, viewport, canonical URLs, Open Graph and Twitter cards, favicon sizes, a web app manifest, and test link previews.
Read the guide →Where to start
Changing hosts or domains? Read DNS records explained and 301 vs 302 redirects. Emails landing in spam? See SPF, DKIM and DMARC.
Before you change anything
Write down or export your current settings first, change one thing at a time and test. DNS changes can take time to spread, and a wrong record can stop email or a website working.