mixi.jp

Readiness by lane

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

Priority fixes for mixi.jp

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

1. Priority 1 · Enable

   Mobile viewport configured

   Observed: The homepage had no viewport meta tag, so phones may render it zoomed out.

   Why it matters: Without it, phones render the page at desktop width and shrink it, which makes text tiny and hard to use.

   What to do: Add <meta name="viewport" content="width=device-width, initial-scale=1"> and check the layout on small screens.

   92% of Social Media & Networking peers do this. Limit: Based on the homepage HTML delivered to an automated client; scripts that run later were not executed.

   Guide: Responsive Web Design Checklist for Real Devices

2. Priority 2 · Accelerate

   HTTP/2 negotiated

   Observed: The TLS handshake selected HTTP/1.1 instead of HTTP/2.

   What to do: Enable HTTP/2 on your CDN or server. Most CDNs do this by default.

   88% of Social Media & Networking peers do this.

   Guide: CDN 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 1 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 · Harden

   DMARC policy enforces quarantine or reject

   Observed: The DMARC policy for mixi.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.

   39% of Social Media & Networking peers do this.

   Guide: A Practical Website Health Check for Owners

What mixi.jp already does well

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

• X-Content-Type-Options: nosniffnosniff header present.42% of peers

What we saw

Homepage checked

https://mixi.jp/

Homepage response

HTTP 200

TLS

TLSv1.3

Certificate

GlobalSign, 390-day validity, expiring 2027-02-28

DNS operators

Amazon Route 53

HSTS

max-age 1 days

DMARC policy

p=none

Homepage HTML

38 KB, gzip

Images on homepage

17 (jpg 9, gif 6, svg 1, png 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 Social Media & Networking sites

• bniconnectglobal.com43
• chat4free.net45
• fotostrana.ru45
• gosupermodel.com44
• utherverse.com47

Social Media & Networking readiness benchmark