drevostavitel.cz

Readiness by lane

Green: drevostavitel.cz. Thin bar: Online Publishing peer median.

Priority fixes for drevostavitel.cz

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Accelerate

   HTTP/2 negotiated

   Observed: The TLS handshake selected http/1.1 instead of HTTP/2.

   Why it matters: HTTP/2 sends many files over one connection, which speeds up pages with lots of images, styles and scripts.

   What to do: Enable HTTP/2 on your CDN or server. Most CDNs do this by default.

   92% of Online Publishing peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.

   Guide: CDN Guide for Website Owners

2. Priority 2 · Harden

   HSTS kept for at least a year

   Observed: The homepage response did not include a Strict-Transport-Security header.

   What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.

   27% of Online Publishing peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

3. Priority 3 · Enable

   Canonical URL declared

   Observed: The homepage did not declare a canonical URL.

   What to do: Add a self-referencing canonical link to every indexable page, using the final https:// URL.

   80% of Online Publishing peers do this.

   Guide: Canonical Tags: A Decision Guide for Duplicate URLs

4. Priority 4 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 2 external scripts without async or defer.

   What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.

   45% of Online Publishing peers do this.

   Guide: Control Third-Party Scripts Before They Control Your Page

What drevostavitel.cz already does well

Practices fewer than half of Online Publishing peers use.

• Modern image formats in useWebP or AVIF images detected.38% of peers

What we saw

Homepage checked

https://www.drevostavitel.cz/

Homepage response

HTTP 200

TLS

TLSv1.3, http/1.1

Certificate

Let's Encrypt, 89-day validity, expiring 2026-12-19

DNS operators

1 self-run or other nameserver domain

Homepage HTML

34 KB, gzip

Images on homepage

25 (webp 11, png 9, jpg 4)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

All 31 checks

Select a gap for the method and fix. How each check works

Compare with other Online Publishing sites

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• magcomi.com55

Online Publishing readiness benchmark