mastertherm.online
Mastertherm Online
Last scanned Jul 26, 2026, 5:47 AM
Overall score
Fair
Summary
This website uses Nginx. SEO is fair (55/100) and accessibility is fair (70/100). Security scores good (80/100) and performance excellent (100/100). Top issue: Missing meta description.
Top issues to fix
11 issues found · 3 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
+5 more issues — details in the sections below.
SEO
7 issue(s) found
Performance
133 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
- info@mastertherm.cz
Meta tags
- Title
- Mastertherm Online
- Description
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
- https://mastertherm.online/landing/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- 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
- DigiCert Inc
- Subject
- mastertherm.online
- Valid from
- Jul 4, 2026
- Valid to
- Jan 18, 2027
- Days until expiry
- 173
- SAN domains
- mastertherm.online, www.mastertherm.online
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 4 · H2 0 · H3 8
Links
8 internal · 11 external · 19 broken
Images
6 total · 4 missing alt
Scripts / Styles
8 scripts · 3 stylesheets
JS / CSS size
0 B · 0 B
Page size
17.8 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Missing canonical link
- Multiple H1 headings found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Over half of images are missing alt text
Scan details
- Requested URL
- https://mastertherm.online
- Final URL
- https://mastertherm.online
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 133 ms
- HTML size
- 17.8 KB
- Redirect chain
- https://mastertherm.online
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does mastertherm.online use?
- mastertherm.online is built with jQuery, Nginx.
- Is mastertherm.online secure (HTTPS)?
- Yes. mastertherm.online uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Jan 18, 2027.
- Who hosts mastertherm.online?
- Hosting provider information for mastertherm.online is not available yet.
- What is mastertherm.online's SEO score?
- mastertherm.online scored 55/100 for SEO in the latest analysis (fair).
- What is mastertherm.online's overall website score?
- mastertherm.online has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card