ameba.jp

Readiness by lane

Green: ameba.jp. Thin bar: Social Media & Networking peer median.

Priority fixes for ameba.jp

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

1. Priority 1 · Harden

   HTTP requests move to HTTPS

   Observed: A request to http://www.ameba.jp/ was not redirected to HTTPS.

   Why it matters: Visitors who type the address or follow an old link start on unencrypted HTTP. A redirect moves them to the encrypted site before any cookies or form data are sent.

   What to do: Add a permanent (301 or 308) redirect from every http:// URL to the same https:// URL at your CDN, load balancer or web server.

   93% of Social Media & Networking peers do this. Limit: Measured for the homepage only, from one location, at the time of the check.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · Accelerate

   Static files cached for 30 days or more

   Observed: A same-site stylesheet or script was cacheable for 1 hours, 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.

   55% of Social Media & Networking peers do this.

   Guide: Browser Caching Guide for Website Owners

3. Priority 3 · Harden

   HSTS kept for at least a year

   Observed: Strict-Transport-Security was sent with a max-age of 180 days, below the one-year benchmark.

   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.

   38% of Social Media & Networking peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

4. 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.

   64% of Social Media & Networking peers do this.

   Guide: XML Sitemap Guide: Include Only URLs You Stand Behind

What ameba.jp already does well

Practices fewer than half of Social Media & Networking peers use.

• DMARC policy enforces quarantine or rejectDMARC policy p=quarantine.39% of peers
• X-Content-Type-Options: nosniffnosniff header present.42% of peers
• Offscreen images lazy-loadedNative lazy loading in use.47% of peers

What we saw

Homepage checked

https://www.ameba.jp/

Homepage response

HTTP 200, after 5 redirects

TLS

TLSv1.3, HTTP/2

Certificate

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

DNS operators

Amazon Route 53

HSTS

max-age 180 days, includeSubDomains

DMARC policy

p=quarantine

Homepage HTML

194 KB, gzip

Images on homepage

83 (svg 19, png 7)

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 Social Media & Networking sites

• dreamies.de51
• friendcafe.jp51
• nicotto.jp53
• vk.ru52
• wisgoon.com52

Social Media & Networking readiness benchmark