Website readiness profile · Snapshot 23 October 2026

zipgrade.com

zipgrade.com's public homepage, certificate and DNS checked against 31 practices and compared with 1,516 Education & Online Learning sites.

Readiness index: 60/100
Ahead of: 46%
Practices observed: 16/30
Popularity band: Top 50K

Measured 2026-10-23 11:45:49 UTC from one location. How we measure

Readiness by lane

Green: zipgrade.com. Thin bar: Education & Online Learning peer median.

Enable

67/100

Peers 75

Harden

78/100

Peers 54

Accelerate

30/100

Peers 57

Recover

0/100

Peers 13

Priority fixes for zipgrade.com

Ordered by impact and by how common each practice is among peers.

Priority 1 · Accelerate
HTML compressed
Observed: The homepage HTML (18 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.
90% of Education & Online Learning 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 · Enable
XML sitemap discoverable
Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.
What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.
65% of Education & Online Learning peers do this.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
Priority 3 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for no max-age, 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.
45% of Education & Online Learning peers do this.
Guide: Browser Caching Guide for Website Owners
Priority 4 · Accelerate
Modern image formats in use
Observed: The homepage had 14 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.
32% of Education & Online Learning peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format

What zipgrade.com already does well

Practices fewer than half of Education & Online Learning peers use.

CAA records limit who can issue certificatesCAA limits issuance to amazontrust.com, letsencrypt.org.13% of peers
Content Security Policy presentContent-Security-Policy present.25% of peers
HSTS kept for at least a yearHSTS with a 365-day max-age covering subdomains.34% of peers

What we saw

Homepage checked: https://www.zipgrade.com/
Homepage response: HTTP 200
TLS: TLSv1.3, HTTP/2
Certificate: Amazon, 393-day validity, expiring 2027-01-23
DNS operators: Amazon Route 53
HSTS: max-age 365 days, includeSubDomains
DMARC policy: p=quarantine
Homepage HTML: 18 KB, uncompressed
Images on homepage: 14 (png 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.

Amazon Route 53 (dns operator)Amazon (certificate authority)Service guide: AWS (Amazon Web Services)

All 31 checks

Select a gap for the method and fix. How each check works

Not observed 14

Observed 16

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
No render-blocking scripts in <head>
robots.txt published
Canonical URL declared
Meta description written
Mobile viewport configured
Page language declared
At most one redirect to the homepage

Not measured 1

HTTP requests move to HTTPS

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Live status for this site: Status Is Down: zipgrade.com. This profile covers configuration only.

Compare with other Education & Online Learning sites

Education & Online Learning readiness benchmark