ameblo.jp

Readiness by lane

Green: ameblo.jp. Thin bar: Online Publishing peer median.

Priority fixes for ameblo.jp

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Harden

   TLS 1.3 negotiated

   Observed: The TLS connection negotiated TLSv1.2.

   Why it matters: TLS 1.3 removes legacy cipher suites and completes the handshake in fewer round trips, so it is both safer and faster for new connections.

   What to do: Enable TLS 1.3 on your CDN or server. Keep TLS 1.2 available for older clients unless you have checked your audience.

   89% of Online Publishing peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · Harden

   HSTS kept for at least a year

   Observed: The homepage response did not include a Strict-Transport-Security header.

   What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.

   On Next.js: Add the header in the headers() option of next.config.js for all routes.

   27% of Online Publishing peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

3. Priority 3 · Accelerate

   Modern image formats in use

   Observed: The homepage had 103 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.

   On Next.js: The next/image component serves optimized formats automatically.

   38% of Online Publishing peers do this.

   Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format

4. Priority 4 · Harden

   DMARC policy enforces quarantine or reject

   Observed: The DMARC policy for ameblo.jp was p=none, which asks receivers to take no action on failing mail.

   What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.

   20% of Online Publishing peers do this.

   Guide: A Practical Website Health Check for Owners

What ameblo.jp already does well

Practices fewer than half of Online Publishing peers use.

• CAA records limit who can issue certificatesCAA limits issuance to amazon.com, certainly.com, cybertrust.ne.jp and others.12% of peers
• Content Security Policy presentContent-Security-Policy present.18% of peers
• X-Content-Type-Options: nosniffnosniff header present.43% of peers

What we saw

Homepage checked

https://ameblo.jp/

Homepage response

HTTP 200

TLS

TLSv1.2, HTTP/2

Certificate

DigiCert, 197-day validity, expiring 2027-02-16

Platform or framework

Next.js

DNS operators

Amazon Route 53

DMARC policy

p=none

Homepage HTML

117 KB, gzip

Images on homepage

103 (jpg 45, png 42, svg 14, gif 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

Compare with other Online Publishing sites

• 1101.com63
• anyflip.com63
• lettuceclub.net63
• t-j.ru64
• toptoon.jp64

Online Publishing readiness benchmark