UTM Builder by bimalrp.com

UTM Builder by bimalrp.com is a lightweight tool for growth marketers, SEO professionals, and digital strategists who tag campaign URLs daily and want to do it without switching tools or opening a web app. WHAT IT DOES - Builds UTM-tagged URLs from a base URL plus up to five campaign parameters (source, medium, name, term, content) - Updates the output live as you type — no submit button - One-click copy to clipboard - Keeps any existing query parameters on your URL exactly as you typed them — safe for signed and affiliate links - Remembers your last-used Base URL and Campaign Source between sessions - Includes ready-made channel presets for the platforms marketers tag most often, with source values that match GA4's own categories so traffic lands in the right default channel automatically - Advanced fields (Term, Content) tucked away to keep everyday use fast WHAT IT DOESN'T DO (INTENTIONALLY) - Does not send any data anywhere — nothing leaves your device - Does not make network requests of any kind - Does not require an account or sign-in - Works fully offline WHY IT EXISTS I'm Bimal Raj Paudel, a growth and digital marketing strategist based in Kathmandu, Nepal (bimalrp.com). This extension is a pocket version of the UTM Builder tool I built for my own site — I use it daily for client and personal campaign work, and built this so I (and anyone else) can tag a link without switching tabs. Feedback and feature requests welcome — reach out via bimalrp.com.