Website readiness profile · Snapshot 23 October 2026

python.org

python.org's public homepage, certificate and DNS checked against 31 practices and compared with 231 Programming & Software sites.

Readiness index: 54/100
Ahead of: 16%
Practices observed: 14/29
Popularity band: Top 10K

Measured 2026-10-23 12:10:18 UTC from one location. How we measure

Readiness by lane

Green: python.org. Thin bar: Programming & Software peer median.

Enable

77/100

Peers 81

Harden

55/100

Peers 59

Accelerate

23/100

Peers 65

Recover

0/100

Peers 7

Priority fixes for python.org

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

Priority 1 · Accelerate
HTML compressed
Observed: The homepage HTML (52 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.
On Fastly: Enable compression for text content types.
94% of Programming & Software 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
Priority 2 · 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.
On Blogger: this setting is largely controlled by the platform. Check the platform's settings and documentation, or ask its support team whether it can be changed for your domain.
50% of Programming & Software peers do this.
Guide: Browser Caching Guide for Website Owners
Priority 3 · Enable
XML sitemap discoverable
Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.
What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.
69% of Programming & Software peers do this.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
Priority 4 · Harden
DMARC policy enforces quarantine or reject
Observed: The DMARC policy for python.org was p=none, which asks receivers to take no action on failing mail.
What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.
45% of Programming & Software peers do this.
Guide: A Practical Website Health Check for Owners

What python.org already does well

Practices fewer than half of Programming & Software peers use.

HSTS kept for at least a yearHSTS with a 730-day max-age covering subdomains.40% of peers
Framing restrictedFraming controls present.47% of peers

What we saw

Homepage checked: https://www.python.org/
Homepage response: HTTP 200
TLS: TLSv1.3, HTTP/2
Certificate: GlobalSign, 396-day validity, expiring 2027-02-14
CDN or edge: Fastly
Platform or framework: Blogger
DNS operators: Amazon Route 53
HSTS: max-age 730 days, includeSubDomains, preload
DMARC policy: p=none
Homepage HTML: 52 KB, uncompressed
Images on homepage: 1 (png 1)

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.

Blogger readiness playbook Fastly (cdn and edge platform)Amazon Route 53 (dns operator)GlobalSign (certificate authority)Service guide: Fastly Service guide: AWS (Amazon Web Services)

All 31 checks

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

Not observed 15

Observed 14

HTTP requests move to HTTPS
HSTS kept for at least a year
TLS 1.3 negotiated
Certificate has more than 14 days left
Framing restricted
HTTP/2 negotiated
robots.txt published
Reachable over IPv6
Meta description written
Mobile viewport configured
Structured data present
Social preview image set
Page language declared
At most one redirect to the homepage

Not measured 2

Modern image formats in use
Offscreen images lazy-loaded

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Live status for this site: Status Is Down: python.org. This profile covers configuration only.

Compare with other Programming & Software sites

Programming & Software readiness benchmark