Website readiness profile · Snapshot 23 October 2026
ed.nl
ed.nl's public homepage, certificate and DNS checked against 31 practices and compared with 3,856 News & Media sites.
- Readiness index
- 82/100
- Ahead of
- 93%
- Practices observed
- 24/31
- Popularity band
- Top 10K
News & Media median 68
of measured News & Media sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: ed.nl. Thin bar: News & Media peer median.
Enable
85/100
Peers 89
Harden
89/100
Peers 56
Accelerate
70/100
Peers 68
Recover
0/100
Peers 11
Priority fixes for ed.nl
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for 22 hours, short of the 30-day benchmark.
Why it matters: Returning visitors and later page views reuse cached files instead of downloading them again.
What to do: Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.
60% of News & Media peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Priority 2 · Accelerate
Modern image formats in use
Observed: The homepage had 107 images and none used WebP or AVIF.
What to do: Serve WebP or AVIF with a JPEG or PNG fallback, either through an image CDN or by generating both formats at build time.
44% of News & Media peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 3 · Enable
At most one redirect to the homepage
Observed: The homepage was reached after 3 redirects.
What to do: Point every alternate address (http, www or apex, old paths) straight to the final URL in a single redirect.
>99% of News & Media peers do this.
Priority 4 · Enable
Social preview image set
Observed: The homepage had no og:image, so shared links may show without a preview image.
What to do: Add Open Graph tags, including og:image with a 1200 x 630 image.
71% of News & Media peers do this.
What ed.nl already does well
Practices fewer than half of News & Media peers use.
- DNSSEC signedDNSSEC delegation (DS record) present.6.1% of peers
- security.txt publishedsecurity.txt with a contact found.6.2% of peers
- Referrer-Policy setReferrer-Policy present.22% of peers
What we saw
- Homepage checked
- https://www.ed.nl/
- Homepage response
- HTTP 200, after 3 redirects
- TLS
- TLSv1.3, HTTP/2
- Certificate
- DigiCert, 198-day validity, expiring 2027-02-17
- DNS operators
- Akamai Edge DNS
- HSTS
- max-age 365 days, includeSubDomains, preload
- DMARC policy
- p=reject
- Homepage HTML
- 679 KB, gzip
- Images on homepage
- 107 (svg 11)
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
Not observed 7
Observed 24
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- DNSSEC signed
- security.txt published
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTTP/2 negotiated
- HTTP/3 advertised
- HTML compressed
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Structured data present
- Page language declared
Own ed.nl?
Re-run the checks after a change, keep a private action plan in a free workspace, or report a mistake.
Live status for this site: Status Is Down: ed.nl. This profile covers configuration only.