Website readiness profile · Snapshot 23 October 2026
mediawiki.org
mediawiki.org's public homepage, certificate and DNS checked against 31 practices and compared with 231 Programming & Software sites.
- Readiness index
- 79/100
- Ahead of
- 84%
- Practices observed
- 23/31
- Popularity band
- Top 50K
Programming & Software median 68
of measured Programming & Software sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: mediawiki.org. Thin bar: Programming & Software peer median.
Enable
90/100
Peers 81
Harden
86/100
Peers 59
Accelerate
60/100
Peers 65
Recover
0/100
Peers 7
Priority fixes for mediawiki.org
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for 300 seconds, short of the 30-day benchmark.
Why it matters: Returning visitors and later page views reuse cached files instead of downloading them again.
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.
50% of Programming & Software peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Priority 2 · Enable
Meta description written
Observed: The homepage had no meta description.
What to do: Write a short, specific description of the page for people, not a list of keywords.
92% of Programming & Software peers do this.
Guide: Meta Titles and Descriptions That Match Search Intent
Priority 3 · Accelerate
Modern image formats in use
Observed: The homepage had 18 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.
42% of Programming & Software peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 4 · Harden
Framing restricted
Observed: The homepage did not send frame-ancestors or X-Frame-Options, so other sites may frame it.
What to do: Send Content-Security-Policy: frame-ancestors 'self' (or a list of trusted origins). X-Frame-Options: SAMEORIGIN covers older browsers.
47% of Programming & Software peers do this.
What mediawiki.org already does well
Practices fewer than half of Programming & Software peers use.
- security.txt publishedsecurity.txt with a contact found.15% of peers
- CAA records limit who can issue certificatesCAA limits issuance to letsencrypt.org, pki.goog.23% of peers
- Content Security Policy presentContent-Security-Policy present.32% of peers
What we saw
- Homepage checked
- https://www.mediawiki.org/
- Homepage response
- HTTP 200, after 1 redirect
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Let's Encrypt, 89-day validity, expiring 2027-01-02
- DNS operators
- 1 self-run or other nameserver domain
- HSTS
- max-age 1,231 days, includeSubDomains, preload
- DMARC policy
- p=reject
- Homepage HTML
- 89 KB, gzip
- Images on homepage
- 18 (png 24, svg 6, 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
Not observed 8
Observed 23
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- security.txt published
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Content Security Policy present
- HTTP/2 negotiated
- HTML compressed
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Mobile viewport configured
- Structured data present
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Own mediawiki.org?
Re-run the checks after a change, or verify the site in a free workspace to save reports with history, compare against similar sites and competitors, and track a private action plan. What owners get.
Live status for this site: Status Is Down: mediawiki.org. This profile covers configuration only.