sakuratravel.jp

Readiness by lane

Green: sakuratravel.jp. Thin bar: Travel Bookings & Trip Planning peer median.

Priority fixes for sakuratravel.jp

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

1. Priority 1 · Accelerate

   HTTP/2 negotiated

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

   Why it matters: HTTP/2 sends many files over one connection, which speeds up pages with lots of images, styles and scripts.

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

   92% of Travel Bookings & Trip Planning peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.

   Guide: CDN Guide for Website Owners

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.

   92% of Travel Bookings & Trip Planning 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.

   96% of Travel Bookings & Trip Planning peers do this.

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

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.

   46% of Travel Bookings & Trip Planning peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

What sakuratravel.jp already does well

Practices fewer than half of Travel Bookings & Trip Planning peers use.

• No render-blocking scripts in <head>Head scripts load without blocking.44% of peers

What we saw

Homepage checked

https://www.sakuratravel.jp/

Homepage response

HTTP 200

TLS

TLSv1.2

Certificate

DigiCert, 198-day validity, expiring 2027-05-06

DNS operators

1 self-run or other nameserver domain

DMARC policy

p=quarantine

Homepage HTML

134 KB, gzip

Images on homepage

86 (jpg 61, png 24, svg 2)

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

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Travel Bookings & Trip Planning readiness benchmark