UTM Link Builder
Paste a page URL, add source, medium and campaign, and copy a clean tagged link. The tool lowercases values, encodes them, keeps your existing query string, and warns you about mistakes that split your GA4 reports.
How this tool works
What a UTM link does
UTM parameters are tags added to the end of a URL. When someone clicks the link, Google Analytics 4 reads the tags and reports the visit under the source, medium and campaign you chose. Without tags, clicks from email, WhatsApp, PDFs and many apps land in Direct.
The three you must set
- utm_source: where the click comes from, such as google, newsletter or linkedin.
- utm_medium: the channel type, such as cpc, email, social or referral.
- utm_campaign: your name for the push, such as diwali_sale_2026.
utm_term (paid keyword), utm_content (which ad or button) and utm_id are optional.
Rules that keep reports clean
- Use lowercase. GA4 treats Email and email as two different values.
- Pick one naming pattern and write it down. A shared sheet beats memory.
- Never add UTMs to links between pages on your own site. They start a new session and overwrite the real source.
- Do not put personal data such as email addresses in UTM values.
The channel hint in the results is an approximation of the GA4 default channel group rules. Check your own channel group settings in GA4 Admin before you rely on it.
Want this done for your site?
Send your URL on WhatsApp and I will tell you what to fix first.
Common questions
What is a UTM builder?
A UTM builder adds tracking parameters to a URL so Google Analytics can report where a click came from. This one also encodes values and checks for common mistakes.
Are UTM parameters case sensitive?
Yes. GA4 treats Email and email as separate values, which splits your reports. Keep every value lowercase.
Should I use UTMs on internal links?
No. Internal tagged links start a new session and replace the original traffic source, which breaks attribution.
Do UTMs hurt SEO?
Tagged URLs can be indexed if search engines find them. Pages with a correct canonical tag point back to the clean URL. Use UTMs for ads, email and social posts, not site navigation.
What medium should I use for paid ads?
Use cpc for pay-per-click search and paid social campaigns. GA4 uses medium and source together to choose the channel group.
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