Five instruments to inspect your site
Type a URL, get a report. Each tool focuses on one domain — no noise, no download.
v2026 · Web analysis platform
Audit the web.
Audit the web.
Build better.
A toolbox to scrutinize, measure and harden your websites — alongside an open source collection of PHP, CSS and JavaScript projects.
5analysis tools
12+open source projects
3stacks · PHP / CSS / JS
$ domprojects scan --url example.com
→ resolving DNS...
✓ A record · 93.184.216.34
✓ TLS 1.3 · valid for 89 days
→ measuring performance...
✓ LCP 1.42s · INP 124ms · CLS 0.02
→ scanning meta tags...
! <meta name="description"> missing
✓ OpenGraph: 8/8 · Twitter: 6/6
→ a11y audit (WCAG 2.2 AA)...
✓ 47 checks passed · 3 warnings
overall_score:
92
/100
$ _
// 01 · Tools
All audits
SEO Audit
Meta, headings, sitemap, Hn structure, keywords.
/seo →Performance
Core Web Vitals, asset weight, response timing.
/perf →Security
HTTPS, headers, HSTS, CSP, cookie leaks.
/sec →Accessibility
WCAG 2.2 audit, contrast, ARIA, keyboard nav.
/a11y →Domain Inspector
DNS, WHOIS, redirects, TLS, SPF / DMARC / MTA-STS.
/domain →Coming soon
Image optimizer
Compression, next-gen formats, srcset audit.
// 02 · Projects
All projects
Projects that ship real code
PHP on the server, CSS for substance, JavaScript for motion. A curated open source selection.