Website readiness profile · Snapshot 23 October 2026
klart.se
klart.se's public homepage, certificate and DNS checked against 31 practices and compared with 190 Weather Forecast sites.
- Readiness index
- 70/100
- Ahead of
- 74%
- Practices observed
- 20/31
- Popularity band
- Top 50K
Weather Forecast median 63
of measured Weather Forecast sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: klart.se. Thin bar: Weather Forecast peer median.
Enable
92/100
Peers 76
Harden
46/100
Peers 54
Accelerate
90/100
Peers 59
Recover
0/100
Peers 14
Priority fixes for klart.se
Ordered by impact and by how common each practice is among peers.
Priority 1 · Harden
HTTP requests move to HTTPS
Observed: A request to http://www.klart.se/ was not redirected to HTTPS.
Why it matters: Visitors who type the address or follow an old link start on unencrypted HTTP. A redirect moves them to the encrypted site before any cookies or form data are sent.
What to do: Add a permanent (301 or 308) redirect from every http:// URL to the same https:// URL at your CDN, load balancer or web server.
On Amazon CloudFront: Set the viewer protocol policy of each cache behaviour to Redirect HTTP to HTTPS.
92% of Weather Forecast peers do this. Limit: Measured for the homepage only, from one location, at the time of the check.
Priority 2 · Accelerate
Offscreen images lazy-loaded
Observed: The homepage had 7 images and none used loading="lazy".
What to do: Add loading="lazy" to images below the fold. Do not lazy-load the main hero image, because that delays the largest visible element.
50% of Weather Forecast peers do this.
Priority 3 · Harden
Framing restricted
Observed: The homepage did not send frame-ancestors or X-Frame-Options, so other sites may frame it.
What to do: Send Content-Security-Policy: frame-ancestors 'self' (or a list of trusted origins). X-Frame-Options: SAMEORIGIN covers older browsers.
On Amazon CloudFront: Set frame options in a response headers policy.
38% of Weather Forecast peers do this.
Priority 4 · Harden
Certificate lifetime of 100 days or less
Observed: The certificate from Amazon had a 393-day validity period, longer than the 100-day maximum that applies from March 2027.
What to do: Move to automated issuance and renewal now, while you still have time to test it.
59% of Weather Forecast peers do this.
What klart.se already does well
Practices fewer than half of Weather Forecast peers use.
- Modern image formats in useWebP or AVIF images detected.23% of peers
- Referrer-Policy setReferrer-Policy present.27% of peers
- HTTP/3 advertisedHTTP/3 advertised.28% of peers
What we saw
- Homepage checked
- https://www.klart.se/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 393-day validity, expiring 2027-03-17
- CDN or edge
- Amazon CloudFront
- DNS operators
- Amazon Route 53
- HSTS
- max-age 730 days, includeSubDomains, preload
- DMARC policy
- p=reject
- Homepage HTML
- 909 KB, br
- Images on homepage
- 7 (webp 2)
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 11
- HTTP requests move to HTTPS
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- DNSSEC signed
- security.txt published
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Offscreen images lazy-loaded
- Structured data present
- Nameservers spread across providers
Observed 20
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- DMARC policy enforces quarantine or reject
- Referrer-Policy set
- HTTP/2 negotiated
- HTTP/3 advertised
- HTML compressed
- Static files cached for 30 days or more
- Modern image formats in use
- No render-blocking scripts in <head>
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Own klart.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: klart.se. This profile covers configuration only.