Website readiness profile · Snapshot 23 October 2026
penguinrandomhouse.com
penguinrandomhouse.com's public homepage, certificate and DNS checked against 31 practices and compared with 696 Literary & Knowledge sites.
- Readiness index
- 76/100
- Ahead of
- 87%
- Practices observed
- 22/30
- Popularity band
- Top 50K
Literary & Knowledge median 62
of measured Literary & Knowledge sites
1 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: penguinrandomhouse.com. Thin bar: Literary & Knowledge peer median.
Enable
95/100
Peers 78
Harden
83/100
Peers 51
Accelerate
44/100
Peers 62
Recover
0/100
Peers 6
Priority fixes for penguinrandomhouse.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
HTML compressed
Observed: The homepage HTML (227 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.
94% of Literary & Knowledge 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
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.
On WordPress: Since WordPress 6.3, scripts can be registered with a defer or async loading strategy.
48% of Literary & Knowledge peers do this.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 3 · Accelerate
Modern image formats in use
Observed: The homepage had 79 images and none used WebP or AVIF.
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.
31% of Literary & Knowledge peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 4 · 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.
What to do: Move to automated issuance and renewal now, while you still have time to test it.
78% of Literary & Knowledge peers do this.
What penguinrandomhouse.com already does well
Practices fewer than half of Literary & Knowledge peers use.
- DNSSEC signedDNSSEC delegation (DS record) present.5.7% of peers
- Content Security Policy presentContent-Security-Policy present.18% of peers
- DMARC policy enforces quarantine or rejectDMARC policy p=quarantine.22% of peers
What we saw
- Homepage checked
- https://www.penguinrandomhouse.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 197-day validity, expiring 2027-04-02
- CDN or edge
- Amazon CloudFront
- Platform or framework
- WordPress
- DNS operators
- Amazon Route 53
- HSTS
- max-age 365 days, includeSubDomains
- DMARC policy
- p=quarantine
- Homepage HTML
- 227 KB, uncompressed
- Images on homepage
- 79 (svg 25, png 19, jpg 16, gif 14)
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 22
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- DNSSEC signed
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTTP/2 negotiated
- HTTP/3 advertised
- 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
Not measured 1
- Static files cached for 30 days or more
Own penguinrandomhouse.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: penguinrandomhouse.com. This profile covers configuration only.