Website readiness profile · Snapshot 23 October 2026
jetbrains.com
jetbrains.com's public homepage, certificate and DNS checked against 31 practices and compared with 231 Programming & Software sites.
- Readiness index
- 86/100
- Ahead of
- 96%
- Practices observed
- 24/31
- 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: jetbrains.com. Thin bar: Programming & Software peer median.
Enable
95/100
Peers 81
Harden
75/100
Peers 59
Accelerate
100/100
Peers 65
Recover
0/100
Peers 7
Priority fixes for jetbrains.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Harden
Certificate lifetime of 100 days or less
Observed: The certificate from Amazon had a 197-day validity period, longer than the 100-day maximum that applies from March 2027.
Why it matters: Under CA/Browser Forum Ballot SC-081v3, the maximum lifetime of public TLS certificates fell to 200 days on 15 March 2026 and falls to 100 days on 15 March 2027 and 47 days on 15 March 2029. Sites that renew by hand will need to renew far more often.
What to do: Move to automated issuance and renewal now, while you still have time to test it.
73% of Programming & Software peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.
Priority 2 · Harden
Content Security Policy present
Observed: The homepage response did not include a Content-Security-Policy header.
What to do: Start with Content-Security-Policy-Report-Only to see what would break, tighten the policy over a few weeks, then enforce it.
32% of Programming & Software peers do this.
Guide: Payment Security and PCI DSS: What Website Owners Need to Know
Priority 3 · Harden
CAA records limit who can issue certificates
Observed: No CAA record was found for jetbrains.com, so any public certificate authority may issue for it.
What to do: Publish CAA records naming every CA you actually use, including the CAs your CDN uses for managed certificates. Add an iodef contact if you want reports.
23% of Programming & Software peers do this.
Priority 4 · Enable
Reachable over IPv6
Observed: No IPv6 (AAAA) address was published for www.jetbrains.com.
What to do: Enable IPv6 at your CDN or host and publish the AAAA record it provides.
62% of Programming & Software peers do this.
What jetbrains.com already does well
Practices fewer than half of Programming & Software peers use.
- security.txt publishedsecurity.txt with a contact found.15% of peers
- HSTS kept for at least a yearHSTS with a 365-day max-age.40% of peers
- HTTP/3 advertisedHTTP/3 advertised.40% of peers
What we saw
- Homepage checked
- https://www.jetbrains.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 197-day validity, expiring 2027-03-30
- CDN or edge
- Amazon CloudFront
- DNS operators
- Amazon Route 53
- HSTS
- max-age 365 days
- DMARC policy
- p=reject
- Homepage HTML
- 257 KB, gzip
- Images on homepage
- 71 (svg 58, webp 11, png 9, gif 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 7
Observed 24
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- security.txt published
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- HTTP/2 negotiated
- HTTP/3 advertised
- HTML compressed
- Static files cached for 30 days or more
- Modern image formats in use
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- robots.txt published
- XML sitemap discoverable
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Structured data present
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Own jetbrains.com?
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: jetbrains.com. This profile covers configuration only.