Free tools
Free marketing engineering tools
Built and used in client work by subimpact network. Free, no signup, and private by default: your inputs stay in your browser.
11 tools
Tracking & Analytics
2 tools- Tracking & Analytics GA4 UTM Builder Build campaign URLs with bulk CSV import, a GA4 default channel check, local QR codes and team presets. Open tool
- Tracking & Analytics Tracking Checker See which GTM, GA4, ad pixel and consent tags appear in a page HTML, with their IDs, Consent Mode v2 signals and duplicates. Open tool
Technical SEO & AI Search
6 tools- Technical SEO & AI Search robots.txt Generator Build a robots.txt with AI crawler controls, then test any file with the RFC 9309 longest-match rule. Open tool
- Technical SEO & AI Search llms.txt Generator Write an llms.txt file in the llmstxt.org format, with a live preview and validation. Open tool
- Technical SEO & AI Search Redirect Checker Follow every redirect hop, see status, Location and HSTS at each step, and flag loops, long chains and HTTPS downgrades. Open tool
- Technical SEO & AI Search AI Search Readiness Checker Score a page for AI search readiness: crawler access per bot, robots.txt, llms.txt, first-response content and structured data. Open tool
- Technical SEO & AI Search Schema Validator Validate JSON-LD against required and recommended properties for Organization, Article, Product, FAQPage, LocalBusiness and more. Open tool
- Technical SEO & AI Search Meta Tag and Open Graph Checker Check title and description widths, canonical, robots, hreflang and Open Graph tags, with Google, social and WhatsApp previews. Open tool
Calculators
2 toolsMessaging
1 toolNo tools match that search. Try a shorter word, such as "ROAS" or "robots".
Want this done properly across your whole stack?
The tools cover one check at a time. subimpact network engineers the full stack: tracking, search, automation and reporting.
Get Free Audit