Free UTM Naming Convention Checker

Use lowercase for all values, use hyphens or underscores consistently (pick one), avoid spaces and special characters, and keep values descriptive but concise.

GA4 treats 'Facebook' and 'facebook' as different sources. Inconsistent naming splits your data and makes reporting inaccurate.

Either works, but pick one and use it consistently. Underscores are more common in UTM conventions (e.g., paid_social), but hyphens are also fine.

Use linkutm's naming convention rules feature to automatically enforce lowercase, separators, and allowed values across your entire team.

This free tool checks against general best practices. For custom rules specific to your organization, use the linkutm platform.

Mixed casing (Facebook vs facebook), inconsistent separators (paid_social vs paid-social), spaces in values, and using different names for the same source (fb vs facebook vs Facebook).

Define standard values for source, medium, and campaign format. Document them, share this checker with your team, and consider using linkutm's naming rules to enforce them automatically.