szamlazz.hu

Readiness by lane

Green: szamlazz.hu. Thin bar: Accounting & Tax peer median.

Priority fixes for szamlazz.hu

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

1. Priority 1 · Harden

   HSTS kept for at least a year

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

   Why it matters: HSTS tells browsers to use HTTPS for your host on every later visit, which removes the window where a first HTTP request can be intercepted.

   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.

   On Cloudflare: Enable HSTS under SSL/TLS > Edge Certificates > HTTP Strict Transport Security and raise max-age gradually.

   40% of Accounting & Tax peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · 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.

   70% of Accounting & Tax peers do this.

   Guide: Canonical Tags: A Decision Guide for Duplicate URLs

3. Priority 3 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 12 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.

   35% of Accounting & Tax peers do this.

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

4. Priority 4 · Harden

   X-Content-Type-Options: nosniff

   Observed: The homepage response did not include X-Content-Type-Options: nosniff.

   What to do: Send X-Content-Type-Options: nosniff on all responses and make sure each file is served with the correct Content-Type.

   On Cloudflare: Add the header with a response header transform rule.

   59% of Accounting & Tax peers do this.

   Guide: A Practical Website Health Check for Owners

What szamlazz.hu already does well

Practices fewer than half of Accounting & Tax peers use.

• Content Security Policy presentContent-Security-Policy present.28% of peers
• Certificate lifetime of 100 days or lessShort-lived 90-day certificate from Google Trust Services, already inside the 2027 limit.38% of peers
• Modern image formats in useWebP or AVIF images detected.48% of peers

What we saw

Homepage checked

https://www.szamlazz.hu/

Homepage response

HTTP 200, after 1 redirect

TLS

TLSv1.3, HTTP/2

Certificate

Google Trust Services, 90-day validity, expiring 2026-11-24

CDN or edge

Cloudflare

DNS operators

Cloudflare

DMARC policy

p=quarantine

Homepage HTML

208 KB, gzip

Images on homepage

96 (svg 82, webp 8, png 8, jpg 5)

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 Accounting & Tax sites

• aportesenlinea.com72
• datev.de73
• invoicehome.com73
• tripletex.no69
• wfirma.pl68

Accounting & Tax readiness benchmark