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Short URL + UTM + QR Bundle Builder Field Guide When Self-Hosted Slugs Beat Hosted Services And Five GA4 Audits Catch The not set Rows
A field guide to the Short URL + UTM + QR Bundle Builder: GA4-validated UTM strings, deterministic FNV-1a self-hosted slugs, ECC-tuned QR pairs, three redirect snippets (nginx/vercel/Netlify), and a campaign-tracking CSV row.
