tantora.jp

Readiness by lane

Green: tantora.jp. Thin bar: Puzzles & Video Games peer median.

Priority fixes for tantora.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.

   91% of Puzzles & Video Games 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 · Harden

   TLS 1.3 negotiated

   Observed: The TLS connection negotiated TLSv1.2.

   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.

   90% of Puzzles & Video Games peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

3. Priority 3 · 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.

   83% of Puzzles & Video Games peers do this.

   Guide: Robots.txt Guide: Control Crawling Without Hiding Mistakes

4. Priority 4 · Accelerate

   Static files cached for 30 days or more

   Observed: A same-site stylesheet or script was cacheable for 7 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.

   44% of Puzzles & Video Games peers do this.

   Guide: Browser Caching Guide for Website Owners

What tantora.jp already does well

Practices fewer than half of Puzzles & Video Games peers use.

• Offscreen images lazy-loadedNative lazy loading in use.46% of peers

What we saw

Homepage checked

https://tantora.jp/

Homepage response

HTTP 200, after 1 redirect

TLS

TLSv1.2, HTTP/2

Certificate

Amazon, 197-day validity, expiring 2027-02-21

DNS operators

Amazon Route 53

DMARC policy

p=none

Homepage HTML

11 KB, gzip

Images on homepage

29 (png 29)

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 Puzzles & Video Games sites

• ad-contents.jp31
• gwars.io31
• itsyourturn.com29
• wartank.net29
• wartank.pl32

Puzzles & Video Games readiness benchmark