What technology does trhknih.cz use?

trhknih.cz is built with PHP, Bootstrap, jQuery, Google Analytics, Meta Pixel.

Is trhknih.cz secure (HTTPS)?

Yes. trhknih.cz uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Nov 11, 2026.

Who hosts trhknih.cz?

Hosting provider information for trhknih.cz is not available yet.

What is trhknih.cz's SEO score?

trhknih.cz scored 80/100 for SEO in the latest analysis (great).

What is trhknih.cz's overall website score?

trhknih.cz has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.

trhknih.cz

Trh knih - online antikvariát

Last scanned Aug 24, 2026, 1:22 PM

Overall score

Great

Summary

Online antikvariát - prodejte svoje knihy nebo nakupte knihu od někoho, kdo ji má doma. This website uses PHP behind Cloudflare CDN. SEO is good (80/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (90/100). Top issue: No H1 heading found.

Online antikvariát - prodejte svoje knihy nebo nakupte knihu od někoho, kdo ji má doma.

Top issues to fix

8 issues found · 2 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
1 cookie without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

SEO

3 issue(s) found

Performance

1.61 s

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

Online antikvariát - prodejte svoje knihy nebo nakupte knihu od někoho, kdo ji má doma.

Facebook Instagram

Meta tags

Title: Trh knih - online antikvariát
Description: Online antikvariát - prodejte svoje knihy nebo nakupte knihu od někoho, kdo ji má doma.
Canonical: https://www.trhknih.cz/
Language: cs
Charset: utf-8
Viewport: width=device-width, initial-scale=1.0
Robots meta
Manifest: https://www.trhknih.cz/favicons/site.webmanifest

Technologies

Detected frameworks, languages, and tools.

PHP Bootstrap jQuery Google Analytics Meta Pixel

Hosting & CDN

Hosting provider: —
CDN provider: Cloudflare
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: trhknih.cz
Valid from: Aug 13, 2026
Valid to: Nov 11, 2026
Days until expiry: 78
SAN domains: *.trhknih.cz, trhknih.cz

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 4

Links

166 internal · 14 external · 13 broken

Images

70 total · 1 missing alt

Scripts / Styles

34 scripts · 9 stylesheets

JS / CSS size

19.6 KB · 1.7 KB

Page size

62.6 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

No H1 heading found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://trhknih.cz
Final URL: https://www.trhknih.cz/
HTTP status: 200
HTTP version: HTTP/2
Response time: 1.61 s
HTML size: 62.6 KB
Redirect chain: https://trhknih.cz → https://www.trhknih.cz/

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Frequently asked questions

What technology does trhknih.cz use?: trhknih.cz is built with PHP, Bootstrap, jQuery, Google Analytics, Meta Pixel.
Is trhknih.cz secure (HTTPS)?: Yes. trhknih.cz uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Nov 11, 2026.
Who hosts trhknih.cz?: Hosting provider information for trhknih.cz is not available yet.
What is trhknih.cz's SEO score?: trhknih.cz scored 80/100 for SEO in the latest analysis (great).
What is trhknih.cz's overall website score?: trhknih.cz has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.