selo.mobi

Readiness by lane

Green: selo.mobi. Thin bar: Puzzles & Video Games peer median.

Priority fixes for selo.mobi

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.

   87% of Puzzles & Video Games 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 · 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

3. Priority 3 · 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.

   23% of Puzzles & Video Games peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

4. Priority 4 · Accelerate

   Modern image formats in use

   Observed: The homepage had 25 images and none used WebP or AVIF.

   What to do: Serve WebP or AVIF with a JPEG or PNG fallback, either through an image CDN or by generating both formats at build time.

   32% of Puzzles & Video Games peers do this.

   Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format

What selo.mobi already does well

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

• Framing restrictedFraming controls present.31% of peers
• Static files cached for 30 days or moreLong-lived caching on static files.44% of peers

What we saw

Homepage checked

https://selo.mobi/

Homepage response

HTTP 200

TLS

TLSv1.3, http/1.1

Certificate

Let's Encrypt, 89-day validity, expiring 2026-12-10

DNS operators

1 self-run or other nameserver domain

DMARC policy

p=none

Homepage HTML

9 KB, gzip

Images on homepage

25 (png 22, jpg 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

Compare with other Puzzles & Video Games sites

• callofwar.com47
• purehtml5.cc48
• puzzlemadness.co.uk48
• puzzlist.com48
• tromf.ro48

Puzzles & Video Games readiness benchmark