Website readiness profile · Snapshot 23 October 2026
lightningmaps.org
lightningmaps.org'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
- 19/31
- 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: lightningmaps.org. Thin bar: Weather Forecast peer median.
Enable
62/100
Peers 76
Harden
80/100
Peers 54
Accelerate
65/100
Peers 59
Recover
0/100
Peers 14
Priority fixes for lightningmaps.org
Ordered by impact and by how common each practice is among peers.
Priority 1 · Enable
XML sitemap discoverable
Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.
Why it matters: A sitemap helps search engines find new and updated pages, especially on large or frequently updated sites.
What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.
66% of Weather Forecast peers do this. Limit: Only the standard location was requested, once, at the time of the check.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
Priority 2 · Enable
Canonical URL declared
Observed: The homepage did not declare a canonical URL.
What to do: Add a self-referencing canonical link to every indexable page, using the final https:// URL.
61% of Weather Forecast peers do this.
Priority 3 · Accelerate
Modern image formats in use
Observed: The homepage had 18 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.
23% of Weather Forecast peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 4 · Accelerate
Offscreen images lazy-loaded
Observed: The homepage had 18 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.
What lightningmaps.org already does well
Practices fewer than half of Weather Forecast peers use.
- CAA records limit who can issue certificatesCAA limits issuance to letsencrypt.org.8.9% of peers
- DMARC policy enforces quarantine or rejectDMARC policy p=quarantine.31% of peers
- Framing restrictedFraming controls present.38% of peers
What we saw
- Homepage checked
- https://www.lightningmaps.org/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Let's Encrypt, 89-day validity, expiring 2026-12-06
- DNS operators
- 1 self-run or other nameserver domain
- HSTS
- max-age 365 days
- DMARC policy
- p=quarantine
- Homepage HTML
- 23 KB, gzip
- Images on homepage
- 18 (png 16, jpg 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 12
Observed 19
- 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
- CAA records limit who can issue certificates
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- HTTP/2 negotiated
- HTML compressed
- Static files cached for 30 days or more
- No render-blocking scripts in <head>
- robots.txt published
- Reachable over IPv6
- Meta description written
- Mobile viewport configured
- Page language declared
- At most one redirect to the homepage
Own lightningmaps.org?
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: lightningmaps.org. This profile covers configuration only.