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UTM Builder (Campaign URL Builder)

Add utm_source, utm_medium, utm_campaign and other tracking tags to any link so Google Analytics 4 shows exactly which campaign brought each visitor.

Runs in your browser — nothing is uploaded Free, no limits

1. Website URL

Existing query parameters and #anchors are kept.

2. Campaign tags

Quick presets (source / medium):
Where the traffic comes from (utm_source).
Marketing medium (utm_medium).
Product, promo code or slogan (utm_campaign).
Ads campaign ID, used for cost data import (utm_id).
Paid search keywords (utm_term).
Tells ads or links apart, e.g. for A/B tests (utm_content).
Advanced GA4 parameters
The buying platform (utm_source_platform).
Type of creative (utm_creative_format).
Targeting criteria (utm_marketing_tactic).

3. Your campaign URL

Enter a website URL and campaign tags to build your link.

Parse an existing UTM link

Recent links (0)

Links you copy are saved here (last 10), only in this browser.

How to use the UTM Builder

  1. Paste the landing-page URL (existing parameters and #anchors are kept).
  2. Pick a preset or fill in source, medium and campaign — plus term, content or ID if you need them.
  3. Copy the tagged link from the result box; it's saved to your recent links.
  4. Switch to Bulk to tag many URLs at once, or paste a tagged link into the parser to edit it.

Frequently asked questions

What are UTM parameters?

UTM parameters are tags added to a URL's query string (like ?utm_source=newsletter&utm_medium=email) that tell analytics tools where a visit came from. Google Analytics reads them when the page loads and attributes the session to that source, medium and campaign.

Which UTM parameters are required?

Google's own Campaign URL Builder marks utm_source, utm_medium and utm_campaign as required, so always set all three. GA4's default channel groups are based on source and medium, and without a campaign name your reports are hard to read. Term, content and ID are optional.

Are UTM parameters case-sensitive?

Yes. GA4 treats “Facebook”, “facebook” and “FaceBook” as three different sources. Keep everything lower case and use underscores or hyphens instead of spaces — the normalise option does this for you.

What should I use for utm_medium?

Use values GA4 recognises so traffic lands in the right channel: cpc or ppc for paid search, paid_social for social ads, social for organic posts, email for newsletters, display, affiliate, referral, video or sms. Unknown mediums show up as “Unassigned”.

Should I use UTM tags on internal links?

No. Tagging links between pages of your own site starts a new session attribution and overwrites the real source (for example, organic search). Use UTMs only on links that point to your site from elsewhere — ads, emails, social posts and partners.

Do UTM parameters affect SEO?

Not when used on external campaign links. If tagged URLs ever get linked publicly, a canonical tag pointing to the clean URL prevents duplicate-content issues.