Website readiness profile · Snapshot 23 October 2026
portswigger.net
portswigger.net's public homepage, certificate and DNS checked against 31 practices and compared with 46 Passwords & Cybersecurity sites.
- Readiness index
- 68/100
- Ahead of
- 30%
- Practices observed
- 19/31
- Popularity band
- Top 50K
Passwords & Cybersecurity median 76
of measured Passwords & Cybersecurity sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: portswigger.net. Thin bar: Passwords & Cybersecurity peer median.
Enable
87/100
Peers 82
Harden
82/100
Peers 69
Accelerate
33/100
Peers 64
Recover
0/100
Peers 2
Priority fixes for portswigger.net
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
HTML compressed
Observed: The homepage HTML (82 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 Amazon CloudFront: Enable Compress objects automatically on the cache behaviour.
89% of Passwords & Cybersecurity 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 60 seconds, 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.
58% of Passwords & Cybersecurity peers do this.
Priority 3 · Accelerate
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 2 external scripts 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.
37% of Passwords & Cybersecurity peers do this.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 4 · Accelerate
Offscreen images lazy-loaded
Observed: The homepage had 69 images and none used loading="lazy".
What to do: Add loading="lazy" to images below the fold. Do not lazy-load the main hero image, because that delays the largest visible element.
54% of Passwords & Cybersecurity peers do this.
What portswigger.net already does well
Practices fewer than half of Passwords & Cybersecurity peers use.
- CAA records limit who can issue certificatesCAA limits issuance to awstrust.com, comodoca.com, letsencrypt.org and others.44% of peers
What we saw
- Homepage checked
- https://portswigger.net/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 197-day validity, expiring 2027-01-31
- CDN or edge
- Amazon CloudFront
- DNS operators
- Amazon Route 53
- HSTS
- max-age 365 days, preload
- DMARC policy
- p=quarantine
- Homepage HTML
- 82 KB, uncompressed
- Images on homepage
- 69 (svg 51, jpg 13, png 2, webp 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.
All 31 checks
Select a gap for the method and fix. How each check works
Not observed 12
- Certificate lifetime of 100 days or less
- DNSSEC signed
- security.txt published
- Referrer-Policy set
- HTTP/3 advertised
- HTML compressed
- Static files cached for 30 days or more
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- Reachable over IPv6
- Structured data present
- Nameservers spread across providers
Observed 19
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- CAA records limit who can issue certificates
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- HTTP/2 negotiated
- Modern image formats in use
- robots.txt published
- XML sitemap discoverable
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Social preview image set
- Page language declared
- At most one redirect to the homepage
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Live status for this site: Status Is Down: portswigger.net. This profile covers configuration only.