Website readiness profile · Snapshot 23 October 2026
note.com
note.com's public homepage, certificate and DNS checked against 31 practices and compared with 306 Online Publishing sites.
- Readiness index
- 75/100
- Ahead of
- 83%
- Practices observed
- 18/28
- Popularity band
- Top 1K
Online Publishing median 64
of measured Online Publishing sites
3 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: note.com. Thin bar: Online Publishing peer median.
Enable
87/100
Peers 84
Harden
75/100
Peers 51
Accelerate
63/100
Peers 65
Recover
0/100
Peers 5
Priority fixes for note.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 1 external script without async or defer.
Why it matters: A plain <script src> in the head stops the browser from showing anything until that file has downloaded and run.
What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.
On Next.js: Use the next/script component with an appropriate loading strategy.
45% of Online Publishing peers do this. Limit: Based on the homepage HTML delivered to an automated client; scripts that run later were not executed.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 2 · Accelerate
HTTP/3 advertised
Observed: The homepage did not advertise HTTP/3 through an Alt-Svc header.
What to do: Turn on HTTP/3 at your CDN. Browsers fall back to HTTP/2 automatically, so the risk is low.
On Amazon CloudFront: Select HTTP/3 in the distribution's supported HTTP versions.
41% of Online Publishing peers do this.
Priority 3 · Harden
Certificate lifetime of 100 days or less
Observed: The certificate from GlobalSign nv-sa had a 396-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.
71% of Online Publishing peers do this.
Priority 4 · Enable
Structured data present
Observed: The homepage had no JSON-LD structured data.
What to do: Add JSON-LD for your organization and main content types, then test it with Google's Rich Results Test.
64% of Online Publishing peers do this.
What note.com already does well
Practices fewer than half of Online Publishing peers use.
- Content Security Policy presentContent-Security-Policy present.18% of peers
- DMARC policy enforces quarantine or rejectDMARC policy p=quarantine.20% of peers
- HSTS kept for at least a yearHSTS with a 365-day max-age.27% of peers
What we saw
- Homepage checked
- https://note.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- GlobalSign, 396-day validity, expiring 2026-12-06
- CDN or edge
- Amazon CloudFront
- Platform or framework
- Next.js
- DNS operators
- Amazon Route 53
- HSTS
- max-age 365 days
- DMARC policy
- p=quarantine
- Homepage HTML
- 106 KB, br
- Images on homepage
- 0
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 10
Observed 18
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- HTTP/2 negotiated
- HTML compressed
- robots.txt published
- XML sitemap discoverable
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Not measured 3
- Static files cached for 30 days or more
- Modern image formats in use
- Offscreen images lazy-loaded
Own note.com?
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: note.com. This profile covers configuration only.