Website readiness profile · Snapshot 23 October 2026
commonapp.org
commonapp.org's public homepage, certificate and DNS checked against 31 practices and compared with 1,516 Education & Online Learning sites.
- Readiness index
- 65/100
- Ahead of
- 61%
- Practices observed
- 18/30
- Popularity band
- Top 50K
Education & Online Learning median 61
of measured Education & Online Learning sites
1 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: commonapp.org. Thin bar: Education & Online Learning peer median.
Enable
64/100
Peers 75
Harden
75/100
Peers 54
Accelerate
58/100
Peers 57
Recover
0/100
Peers 13
Priority fixes for commonapp.org
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
HTTP/2 negotiated
Observed: The TLS handshake selected HTTP/1.1 instead of HTTP/2.
Why it matters: HTTP/2 sends many files over one connection, which speeds up pages with lots of images, styles and scripts.
What to do: Enable HTTP/2 on your CDN or server. Most CDNs do this by default.
On Amazon CloudFront: Choose HTTP/2 (or HTTP/2 and HTTP/3) as supported versions on the distribution.
80% of Education & Online Learning peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.
Priority 2 · Enable
XML sitemap discoverable
Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.
What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.
65% of Education & Online Learning peers do this.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
Priority 3 · 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.
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.
45% of Education & Online Learning peers do this.
Priority 4 · 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.
62% of Education & Online Learning peers do this.
What commonapp.org already does well
Practices fewer than half of Education & Online Learning peers use.
- CAA records limit who can issue certificatesCAA limits issuance to amazon.com, amazonaws.com, amazontrust.com and others.13% of peers
- Referrer-Policy setReferrer-Policy present.27% of peers
- Modern image formats in useWebP or AVIF images detected.32% of peers
What we saw
- Homepage checked
- https://www.commonapp.org/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3
- Certificate
- Amazon, 197-day validity, expiring 2027-03-09
- CDN or edge
- Amazon CloudFront
- Platform or framework
- Gatsby
- DNS operators
- Amazon Route 53
- HSTS
- max-age 365 days, includeSubDomains, preload
- DMARC policy
- p=reject
- Homepage HTML
- 537 KB, br
- Images on homepage
- 55 (webp 39, jpg 37, png 31, svg 10)
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
- Certificate lifetime of 100 days or less
- DNSSEC signed
- security.txt published
- Content Security Policy present
- HTTP/2 negotiated
- HTTP/3 advertised
- Static files cached for 30 days or more
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Structured data present
- Nameservers spread across providers
Observed 18
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- CAA records limit who can issue certificates
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Referrer-Policy set
- HTML compressed
- Modern image formats in use
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- robots.txt published
- Meta description written
- Mobile viewport configured
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Not measured 1
- HTTP requests move to HTTPS
Own commonapp.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: commonapp.org. This profile covers configuration only.