Website readiness profile · Snapshot 23 October 2026
shonenjumpplus.com
shonenjumpplus.com's public homepage, certificate and DNS checked against 31 practices and compared with 306 Online Publishing sites.
- Readiness index
- 47/100
- Ahead of
- 9.2%
- Practices observed
- 13/31
- Popularity band
- Top 5K
Online Publishing median 64
of measured Online Publishing sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: shonenjumpplus.com. Thin bar: Online Publishing peer median.
Enable
62/100
Peers 84
Harden
49/100
Peers 51
Accelerate
30/100
Peers 65
Recover
0/100
Peers 5
Priority fixes for shonenjumpplus.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
HTML compressed
Observed: The homepage HTML (247 KB) was delivered without gzip, Brotli or zstd compression.
Why it matters: Compression usually shrinks HTML several times over, so the first bytes of the page arrive sooner on slow connections.
What to do: Enable Brotli or gzip for text responses (HTML, CSS, JavaScript, JSON, SVG) at the CDN or origin.
On Amazon CloudFront: Enable Compress objects automatically on the cache behaviour.
94% of Online Publishing peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Guide: How to Set a Website Performance Budget That Teams Can Keep
Priority 2 · Enable
robots.txt published
Observed: No robots.txt file was returned at the site root.
What to do: Publish /robots.txt with any crawl rules you need and a Sitemap: line pointing to your XML sitemap.
91% of Online Publishing peers do this.
Guide: Robots.txt Guide: Control Crawling Without Hiding Mistakes
Priority 3 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for 1 days, 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.
57% of Online Publishing peers do this.
Priority 4 · 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.
79% of Online Publishing peers do this.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
What shonenjumpplus.com already does well
Practices fewer than half of Online Publishing peers use.
- Framing restrictedFraming controls present.37% of peers
- X-Content-Type-Options: nosniffnosniff header present.43% of peers
- No render-blocking scripts in <head>Head scripts load without blocking.45% of peers
What we saw
- Homepage checked
- https://shonenjumpplus.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 394-day validity, expiring 2027-01-07
- CDN or edge
- Amazon CloudFront
- DNS operators
- Amazon Route 53
- DMARC policy
- p=none
- Homepage HTML
- 247 KB, uncompressed
- Images on homepage
- 228 (png 27, jpg 12, svg 9)
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 18
- HSTS kept for at least a year
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- DNSSEC signed
- security.txt published
- DMARC policy enforces quarantine or reject
- Content Security Policy present
- Referrer-Policy set
- HTTP/3 advertised
- HTML compressed
- Static files cached for 30 days or more
- Modern image formats in use
- Offscreen images lazy-loaded
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- Structured data present
- Nameservers spread across providers
Observed 13
- HTTP requests move to HTTPS
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- X-Content-Type-Options: nosniff
- Framing restricted
- HTTP/2 negotiated
- No render-blocking scripts in <head>
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Social preview image set
- Page language declared
- At most one redirect to the homepage
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Live status for this site: Status Is Down: shonenjumpplus.com. This profile covers configuration only.