UTM Builder

UTM Builder is a browser-based tool for creating campaign links with `utm_source`, `utm_medium`, `utm_campaign`, `utm_term`, and `utm_content` parameters. It is useful for marketers, growth teams, content teams, and operators who need consistent tracking links across email, paid ads, social posts, affiliate placements, internal banners, and A/B test variants. Small mistakes in query strings can break attribution, fragment analytics reports, or overwrite existing landing-page parameters.

This tool takes a base URL, preserves any existing query parameters, and adds or replaces UTM fields in a reliable way so the final link is ready to paste into your campaign workflow. It helps reduce manual string editing errors, supports repeatable naming conventions, and keeps the entire URL-building step local in the browser.

The tool validates UTM parameters against Google Analytics standards, checking for spaces, special characters, and character limits. It warns when values don't follow naming conventions, helping teams maintain consistent UTM strategies and avoid misattribution in analytics reports.