amass.jp

Readiness by lane

Green: amass.jp. Thin bar: News & Media peer median.

Priority fixes for amass.jp

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

1. Priority 1 · Accelerate

   HTML compressed

   Observed: The homepage HTML (30 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.

   97% of News & Media 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

2. Priority 2 · Enable

   Mobile viewport configured

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

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

   98% of News & Media peers do this.

   Guide: Responsive Web Design Checklist for Real Devices

3. 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.

   60% of News & Media peers do this.

   Guide: Browser Caching Guide for Website Owners

4. Priority 4 · 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.

   35% of News & Media peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

What we saw

Homepage checked

https://amass.jp/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

Japan Registry Services Co., Ltd., 88-day validity, expiring 2026-12-15

DNS operators

1 self-run or other nameserver domain

DMARC policy

p=none

Homepage HTML

30 KB, uncompressed

Images on homepage

29 (jpg 29)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

All 31 checks

Select a gap for the method and fix. How each check works

Compare with other News & Media sites

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• technews.tw43

News & Media readiness benchmark