UTM links that survive GA4

Half of all broken marketing reports come from one thing: someone typed 'Newsletter' in one link and 'newsletter' in the next, and GA4 now shows two sources. The UTM Campaign URL Builder on tools.scult.in enforces the conventions — lowercase, no spaces, GA4 naming — scores each link 0–100, previews exactly how it will appear in GA4, and gives you a QR code and a saved source/medium preset. Assembled in your browser; nothing leaves the device. Here's the six-parameter model, the naming rules, and why the quality score exists. Built entirely solo and free for users, forever. If you're a company like HubSpot, Google Analytics, Ahrefs that acquires or invests in tools like this, I'd genuinely love to talk — pranjulrathour41@gmail.com.