Website readiness profile · Snapshot 23 October 2026
protonvpn.com
protonvpn.com's public homepage, certificate and DNS checked against 31 practices and compared with 21 VPNs sites.
- Readiness index
- 88/100
- Ahead of
- 86%
- Practices observed
- 26/31
- Popularity band
- Top 50K
VPNs median 69
of measured VPNs sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: protonvpn.com. Thin bar: VPNs peer median.
Enable
95/100
Peers 81
Harden
94/100
Peers 65
Accelerate
75/100
Peers 69
Recover
0/100
Peers 0
Priority fixes for protonvpn.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 74 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 Cloudflare: Cloudflare Polish can convert images to WebP.
33% of VPNs 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
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.
On Cloudflare: Enable HTTP/3 (with QUIC) under Speed > Optimization > Protocol Optimization.
57% of VPNs peers do this.
Priority 3 · 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.
52% of VPNs peers do this.
Guide: Payment Security and PCI DSS: What Website Owners Need to Know
Priority 4 · Enable
Reachable over IPv6
Observed: No IPv6 (AAAA) address was published for protonvpn.com.
What to do: Enable IPv6 at your CDN or host and publish the AAAA record it provides.
On Cloudflare: Cloudflare offers IPv6 compatibility for proxied hostnames; check the setting in Network.
57% of VPNs peers do this.
What protonvpn.com already does well
Practices fewer than half of VPNs peers use.
- DNSSEC signedDNSSEC delegation (DS record) present.10% of peers
- security.txt publishedsecurity.txt with a contact found.24% of peers
- CAA records limit who can issue certificatesCAA limits issuance to comodoca.com, digicert.com, globalsign.com and others.29% of peers
What we saw
- Homepage checked
- https://protonvpn.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Let's Encrypt, 89-day validity, expiring 2027-01-17
- Platform or framework
- Astro
- DNS operators
- Cloudflare
- HSTS
- max-age 365 days, includeSubDomains, preload
- DMARC policy
- p=quarantine
- Homepage HTML
- 417 KB, gzip
- Images on homepage
- 74 (svg 57)
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 5
Observed 26
- 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
- DNSSEC signed
- security.txt published
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Referrer-Policy set
- HTTP/2 negotiated
- HTML compressed
- Static files cached for 30 days or more
- 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 protonvpn.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: protonvpn.com. This profile covers configuration only.