Free tools

Inspect any website’s
delivery stack in one search.

Enter a domain and see which CDN is serving it, who runs its DNS, whether TLS and caching are set up right, and what firewall is protecting it — the same detection data behind 200+ assessments a year. Free, no signup, shareable reports.

Try: github.comapple.comcloudflare.comshopify.comamazon.com

DNS and CDN are already done. The full scan adds three deeper checks in one pass.
Want a human read on all of this — performance, resilience and what you should be paying? Get a free infrastructure assessment →

Trusted by 100+ enterprises worldwide

BVLGARICANALIFURLAMAX MARALUXOTTICACarrefourFLOSGAMENETleasewebSOFTPEDIABVLGARICANALIFURLAMAX MARALUXOTTICACarrefourFLOSGAMENETleasewebSOFTPEDIA
Measured in your browserWe advise on speed. We practice it.Loaded just now · real numbers from this visit, not a lab score.
Page loaded
First byte
DOM ready
First paint
Largest paint
DNS lookup
TLS handshake
Transferred
Saved by compression
Requests
In development

The toolkit.

The first releases are in build now. Until they ship, the fastest answer is still a free assessment, same data, human-graded.

CDN Finder Beta Flagship

Enter any domain and see which CDN, or stack of CDNs, is serving it, detected from DNS, response headers and certificate fingerprints, with a shareable report. The tool CDNFinder.com will point to.

Detect a CDN free →

DNS Finder Beta

Full DNS lookup and audit: every record, the authoritative provider behind the domain, propagation state, and the misconfigurations that slow resolution down.

Run a free lookup →

WAF Detector Beta

Detect which WAF or security edge is protecting a site, what it blocks, what it lets through, and what that choice implies for performance.

Open the tool page →

Bot Detection Beta

Identify the bot-management vendor — DataDome, HUMAN, Kasada, Cloudflare Bot Management, Imperva — from headers, cookies and challenge behaviour.

Open the tool page →

HTTP Header Analyzer Beta

Paste a URL and get every response header decoded: caching directives, security headers, compression, and what to fix first.

Open the tool page →

TLS & Cache Checker Beta

Certificate chain, protocol versions and cache behavior in one pass, including readiness for the 2026–2029 shortening certificate lifetimes.

Open the tool page →

Three tools live now, more on the way

CDN Finder, DNS Finder and HTTP Header Analyzer are available free in beta, powered by the benchmark data behind 200+ assessments a year.

Get notified at launch