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SGSiteGraph

mathiasbynens.be

Mathias Bynens

Last scanned Aug 24, 2026, 1:23 PM

90

Overall score

Excellent

Summary

Mathias Bynens is a web standards enthusiast currently working on Chrome at Google. This website uses Apache hosted on DUOCAST-AS - Duocast B.V., NL. SEO is good (75/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Missing canonical link.

Mathias Bynens is a web standards enthusiast currently working on Chrome at Google.

Netherlands
Hosted on DUOCAST-AS - Duocast B.V., NL

Top issues to fix

6 issues found · 1 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • Multiple H1 headings found

    SEO

    Keep a single H1 per page and demote the others to H2/H3.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

  • 1 broken link on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

75

SEO

4 issue(s) found

100

Performance

129 ms

90

Security

HTTPS & header checks

100

Accessibility

0 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.

Mathias Bynens is a web standards enthusiast currently working on Chrome at Google.

X (Twitter)GitHub

Contact

Email, phone, and address published on this site's own pages.

Source: https://mathiasbynens.be/contact

Meta tags

Title
Mathias Bynens
Description
Mathias Bynens is a web standards enthusiast currently working on Chrome at Google.
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width
Robots meta
Manifest
https://mathiasbynens.be/.webmanifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

jQueryGoogle AnalyticsApache

Hosting & CDN

CDN provider
—
IP address
83.137.145.144
ASN
AS31477 (DUOCAST-AS - Duocast B.V., NL)

DNS records

TypeValue
A
  • 83.137.145.144
AAAA
  • 2a01:1b0:7999:402::144
MX
  • aspmx.l.google.com
  • aspmx2.googlemail.com
  • aspmx4.googlemail.com
  • alt2.aspmx.l.google.com
  • aspmx5.googlemail.com
  • aspmx3.googlemail.com
TXT
  • v=spf1 include:_spf.google.com ip4:83.137.145.0/24 ip6:2a01:1b0:7999:402::0/24 ~all
NS
  • ns2.exsilia.net
  • ns1.exsilia.net
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
mathiasbynens.be
Valid from
Jun 28, 2026
Valid to
Sep 26, 2026
Days until expiry
32
SAN domains
*.mathiasbynens.be, bynens.eu, mathiasbynens.be, mathibus.com, www.bynens.eu, www.mathibus.com

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 9 · H2 1 · H3 0

Links

10 internal · 4 external · 1 broken

Images

1 total · 0 missing alt

Scripts / Styles

3 scripts · 1 stylesheets

JS / CSS size

163 KB · 7.7 KB

Page size

6.6 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
7
sitemap.xml
Found
URLs in sitemap
58

SEO issues

  • Missing canonical link
  • Multiple H1 headings found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://mathiasbynens.be
Final URL
https://mathiasbynens.be
HTTP status
200
HTTP version
HTTP/2
Response time
129 ms
HTML size
6.6 KB
Redirect chain
https://mathiasbynens.be

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does mathiasbynens.be use?
mathiasbynens.be is built with jQuery, Google Analytics, Apache.
Is mathiasbynens.be secure (HTTPS)?
Yes. mathiasbynens.be uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 26, 2026.
Who hosts mathiasbynens.be?
mathiasbynens.be is hosted on DUOCAST-AS - Duocast B.V., NL.
What is mathiasbynens.be's SEO score?
mathiasbynens.be scored 75/100 for SEO in the latest analysis (fair).
What is mathiasbynens.be's overall website score?
mathiasbynens.be has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.