Website readiness profile · Snapshot 23 October 2026
cursor.com
cursor.com's public homepage, certificate and DNS checked against 31 practices and compared with 231 Programming & Software sites.
- Readiness index
- 81/100
- Ahead of
- 87%
- Practices observed
- 23/31
- Popularity band
- Top 10K
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: cursor.com. Thin bar: Programming & Software peer median.
Enable
95/100
Peers 81
Harden
86/100
Peers 59
Accelerate
63/100
Peers 65
Recover
0/100
Peers 7
Priority fixes for cursor.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
Modern image formats in use
Observed: The homepage had 52 images and none used WebP or AVIF.
Why it matters: WebP and AVIF are typically much smaller than JPEG or PNG at similar quality, and images are often the heaviest part of a page.
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.
On Vercel: Vercel Image Optimization serves modern formats.
42% of Programming & Software peers do this. Limit: Based on the homepage HTML delivered to an automated client; scripts that run later were not executed.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 2 · Accelerate
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 1 external script without async or defer.
What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.
On Next.js: Use the next/script component with an appropriate loading strategy.
51% of Programming & Software peers do this.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 3 · Accelerate
HTTP/3 advertised
Observed: The homepage did not advertise HTTP/3 through an Alt-Svc header.
What to do: Turn on HTTP/3 at your CDN. Browsers fall back to HTTP/2 automatically, so the risk is low.
40% of Programming & Software peers do this.
Priority 4 · Harden
CAA records limit who can issue certificates
Observed: No CAA record was found for cursor.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.
What cursor.com already does well
Practices fewer than half of Programming & Software peers use.
- security.txt publishedsecurity.txt with a contact found.15% of peers
- Content Security Policy presentContent-Security-Policy present.32% of peers
- HSTS kept for at least a yearHSTS with a 730-day max-age.40% of peers
What we saw
- Homepage checked
- https://cursor.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Let's Encrypt, 89-day validity, expiring 2026-11-24
- CDN or edge
- Vercel
- Platform or framework
- Next.js
- DNS operators
- Amazon Route 53
- HSTS
- max-age 730 days
- DMARC policy
- p=quarantine
- Homepage HTML
- 610 KB, br
- Images on homepage
- 52 (png 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
- security.txt published
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- HTTP/2 negotiated
- HTML compressed
- Static files cached for 30 days or more
- Offscreen images lazy-loaded
- 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 cursor.com?
Re-run the checks after a change, keep a private action plan in a free workspace, or report a mistake.
Live status for this site: Status Is Down: cursor.com. This profile covers configuration only.