Website readiness profile · Snapshot 23 October 2026
smhi.se
smhi.se's public homepage, certificate and DNS checked against 31 practices and compared with 190 Weather Forecast sites.
- Readiness index
- 76/100
- Ahead of
- 88%
- Practices observed
- 22/30
- Popularity band
- Top 50K
Weather Forecast median 63
of measured Weather Forecast sites
1 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: smhi.se. Thin bar: Weather Forecast peer median.
Enable
74/100
Peers 76
Harden
78/100
Peers 54
Accelerate
72/100
Peers 59
Recover
100/100
Peers 14
Priority fixes for smhi.se
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 no max-age, 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.
48% of Weather Forecast peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Priority 2 · Enable
Meta description written
Observed: The homepage had no meta description.
What to do: Write a short, specific description of the page for people, not a list of keywords.
92% of Weather Forecast peers do this.
Guide: Meta Titles and Descriptions That Match Search Intent
Priority 3 · Harden
DMARC policy enforces quarantine or reject
Observed: The DMARC policy for smhi.se was p=none, which asks receivers to take no action on failing mail.
What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.
31% of Weather Forecast 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.
58% of Weather Forecast peers do this.
What smhi.se already does well
Practices fewer than half of Weather Forecast peers use.
- DNSSEC signedDNSSEC delegation (DS record) present.12% of peers
- Nameservers spread across providersNameservers spread across more than one operator.14% of peers
- Content Security Policy presentContent-Security-Policy present.22% of peers
What we saw
- Homepage checked
- https://www.smhi.se/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Let's Encrypt, 89-day validity, expiring 2026-11-28
- DNS operators
- 2 self-run or other nameserver domains
- HSTS
- max-age 365 days, preload
- DMARC policy
- p=none
- Homepage HTML
- 111 KB, gzip
- Images on homepage
- 5 (jpg 6, webp 6, png 2, svg 1)
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 8
Observed 22
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- Certificate lifetime of 100 days or less
- DNSSEC signed
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTTP/2 negotiated
- HTML compressed
- Modern image formats in use
- No render-blocking scripts in <head>
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Mobile viewport configured
- Page language declared
- At most one redirect to the homepage
- Nameservers spread across providers
Not measured 1
- Offscreen images lazy-loaded
Own smhi.se?
Re-run the checks after a change, or verify the site in a free workspace to save reports with history, compare against similar sites and competitors, and track a private action plan. What owners get.
Live status for this site: Status Is Down: smhi.se. This profile covers configuration only.