Website readiness profile · Snapshot 23 October 2026
mollie.com
mollie.com's public homepage, certificate and DNS checked against 31 practices and compared with 157 Online Payment & Wallets sites.
- Readiness index
- 86/100
- Ahead of
- 93%
- Practices observed
- 24/30
- Popularity band
- Top 50K
Online Payment & Wallets median 64
of measured Online Payment & Wallets sites
1 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: mollie.com. Thin bar: Online Payment & Wallets peer median.
Enable
95/100
Peers 72
Harden
85/100
Peers 63
Accelerate
82/100
Peers 61
Recover
0/100
Peers 6
Priority fixes for mollie.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 237 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 WordPress: WordPress has supported WebP uploads since 5.8 and AVIF since 6.5; image plugins or the host can convert existing images.
47% of Online Payment & Wallets 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 · Harden
Framing restricted
Observed: The homepage did not send frame-ancestors or X-Frame-Options, so other sites may frame it.
What to do: Send Content-Security-Policy: frame-ancestors 'self' (or a list of trusted origins). X-Frame-Options: SAMEORIGIN covers older browsers.
64% of Online Payment & Wallets 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.
49% of Online Payment & Wallets peers do this.
Guide: Payment Security and PCI DSS: What Website Owners Need to Know
Priority 4 · Harden
Referrer-Policy set
Observed: The homepage response did not include a Referrer-Policy header.
What to do: Send Referrer-Policy: strict-origin-when-cross-origin unless you have a reason to share more.
37% of Online Payment & Wallets peers do this.
What mollie.com already does well
Practices fewer than half of Online Payment & Wallets peers use.
- security.txt publishedsecurity.txt with a contact found.6.6% of peers
- DNSSEC signedDNSSEC delegation (DS record) present.8.3% of peers
- CAA records limit who can issue certificatesCAA limits issuance to comodoca.com, digicert.com, globalsign.com and others.18% of peers
What we saw
- Homepage checked
- https://www.mollie.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Google Trust Services, 90-day validity, expiring 2027-01-04
- CDN or edge
- Google edge
- Platform or framework
- WordPress
- DNS operators
- Google Cloud DNS
- HSTS
- max-age 365 days, includeSubDomains, preload
- DMARC policy
- p=quarantine
- Homepage HTML
- 2,440 KB, br
- Images on homepage
- 237 (png 378, jpg 135, svg 22)
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 6
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
- 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
- HTTP/2 negotiated
- HTTP/3 advertised
- HTML compressed
- 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
Not measured 1
- Static files cached for 30 days or more
Own mollie.com?
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Live status for this site: Status Is Down: mollie.com. This profile covers configuration only.