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Návody o zdraví webu, SEO, rychlosti, SSL a doručitelnosti e-mailů.
17. 9. 2026 · Čtení: 7 minTotal Blocking Time Explained: What It Means and How to Cut It
Total Blocking Time measures how long the main thread is blocked while a page loads. Learn how TBT is calculated, how it relates to…
16. 9. 2026 · Čtení: 8 minDMARC for Subdomains: How the sp Tag Protects Your Domain
Attackers can spoof subdomains you never use. Learn how DMARC applies to subdomains, what the sp tag does, and how to set policies for…
16. 9. 2026 · Čtení: 8 minSubresource Integrity: Protect Your Site From Tampered Scripts
Subresource Integrity lets browsers reject third-party scripts and styles that have been changed. Learn how SRI works, when to use it and where it…
16. 9. 2026 · Čtení: 8 minHow to Prioritise SEO Audit Findings: What to Fix First
An SEO audit can list dozens of findings. Learn how to rank them by impact and effort, what to fix first, what can wait…
15. 9. 2026 · Čtení: 7 minWebsite Speed Monitoring: Catch Slowdowns Before Customers Do
Websites get slower over time as plugins, tags and content pile up. Learn what to monitor, how often, which tools to use and how…
15. 9. 2026 · Čtení: 8 minChanging DNS Provider Without Breaking Your Email
Moving your domain's DNS to a new host can silently break e-mail. Learn which records to copy, how to compare zones and how to…
15. 9. 2026 · Čtení: 8 minHow to Add Security Headers on Apache, Nginx, WordPress and CDNs
Copy-ready examples for adding HSTS, CSP, X-Frame-Options and other security headers on Apache, Nginx, WordPress hosting and CDNs, plus how to verify them.
15. 9. 2026 · Čtení: 8 minE-E-A-T Explained: Showing Trust on a Small Business Website
What E-E-A-T means in plain words, why trust matters most, and practical ways a small business website can show experience, expertise and reliability.
14. 9. 2026 · Čtení: 7 minExcessive DOM Size: Why It Slows Pages and How to Fix It
A page with thousands of HTML elements takes longer to style, lay out and update. Learn what causes an excessive DOM size, why it…
14. 9. 2026 · Čtení: 7 minHow to Authenticate Third-Party Email Senders for Your Domain
CRMs, helpdesks, newsletter and invoicing tools often send as your domain without proper authentication. Learn how to find them and align each with DMARC.
14. 9. 2026 · Čtení: 8 minDNSSEC Explained for Website Owners: Is It Worth Enabling?
DNSSEC signs your DNS records so resolvers can detect forged answers. Learn how it works, what it protects, the risks of misconfiguration and how…
13. 9. 2026 · Čtení: 7 minPagination and SEO: How to Handle Page 2, 3 and Beyond
How search engines treat paginated category and blog pages, why page 2 should not canonicalise to page 1, and best practices for infinite scroll…