UTM Link Validator

Q: How do I know if my UTM link is working?

You can verify your UTM link is working by pasting it into a UTM Link Validator to ensure the parameters parse correctly. Once verified, click the link and check Google Analytics 4 (GA4) under the 'Realtime' report to confirm the source, medium, and campaign are registering.

Q: Why are my UTM parameters not showing in GA4?

Missing UTM data in GA4 is often caused by formatting errors like typos, using spaces instead of dashes, or missing required parameters. Another common issue is improper server redirects on your website that strip the parameters from the URL before GA4 can read them.

Q: Are UTM parameters case sensitive?

Yes. Google Analytics and HubSpot both treat utm_source=Facebook and utm_source=facebook as two different sources, which splits one channel into multiple rows in your reports. Keep every UTM value lowercase. This validator flags uppercase characters so you can catch them before the link goes live.

Q: Which UTM parameters are required?

utm_source, utm_medium, and utm_campaign are the three required parameters for meaningful attribution. utm_term and utm_content are optional and mainly used for paid search keywords and A/B testing. A link missing any of the three required parameters will report incomplete data.

Paste your tagged URL below to run an instant health check on your tracking data.

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Common UTM Mistakes

Spaces: Cause browser encoding issues (%20) and fragmented data.
Uppercase Letters: GA4 treats "Facebook" and "facebook" as different sources.
Missing Parameters: Source, Medium, and Campaign are essential.

Why Validate Your Links?

Even one "bad" link can ruin your campaign attribution. An audit ensures that your B2B reporting in HubSpot and GA4 stays clean, reliable, and actionable.

Frequently Asked Questions

How do I know if my UTM link is working?

Paste it into the validator above to confirm the parameters parse correctly. Once verified, click the link and check Google Analytics 4 under the Realtime report to confirm the source, medium, and campaign are registering.

Why are my UTM parameters not showing in GA4?

Missing UTM data usually comes from formatting errors — typos, spaces instead of dashes, or a missing required parameter. The other common cause is a server redirect on your site that strips the parameters from the URL before GA4 can read them.

Are UTM parameters case sensitive?

Yes. Google Analytics and HubSpot both treat utm_source=Facebook and utm_source=facebook as two different sources, which splits one channel into multiple rows. Keep every value lowercase — this validator flags uppercase characters so you catch them before the link goes live.

Which UTM parameters are required?

utm_source, utm_medium, and utm_campaign are the three required for meaningful attribution. utm_term and utm_content are optional. A link missing any of the three required parameters will report incomplete data. See when not to tag a link at all for the internal-link exception.

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