Free UTM Builder: campaign URLs, bulk tagging and QR codes
Tag links for Google Analytics 4 in seconds. Build one link or hundreds at once, catch mistakes that break your reports, and download a QR code. Everything runs in your browser.
1. Your link and campaign
2. Your tagged link
QR code
Tip: for printed QR codes use source = where it's printed (poster, flyer) and medium = print.
Bulk UTM builder
One URL per line, or CSV columns url,source,medium,campaign,term,content (a header row is optional). Blank columns use the values from the Builder tab. Up to 5,000 rows.
| # | Tagged URL | Notes |
|---|
Decode a tagged link
Recent links
Your last 25 copied links, saved only in this browser.
How to build a UTM link
Paste the page URL, choose where the link will be shared (source), the type of traffic (medium) and a campaign name. The builder adds utm_source, utm_medium and utm_campaign to your link. Existing query parameters and #anchors are kept.
What are UTM parameters?
Tags on a link that tell Google Analytics 4, Matomo, Plausible and other analytics tools where a visitor came from: utm_source (google, newsletter), utm_medium (cpc, email, social), utm_campaign (spring_sale), and optionally utm_term (the keyword), utm_content (which button or ad variant) and utm_id (a campaign ID).
Why do my UTM visits show as "Unassigned" in GA4?
GA4 sorts traffic into channels using the medium. Values it doesn't recognise, like "newsletter" as a medium or "Paid-Social", can land in "Unassigned". The builder warns you when a medium probably won't match GA4's default channel groups.
Should UTM values be lowercase?
Yes. UTM values are case-sensitive, so "Facebook" and "facebook" count as two sources. Lowercase is on by default.
Can I build UTM links in bulk?
Yes. Open the Bulk tab and paste a list of URLs, or a CSV with a source, medium and campaign for each row. You'll get a table you can copy or download as CSV for a spreadsheet.
Is it private?
Yes. The links are built in your browser. Nothing is uploaded, and the history stays on your device. The app works offline once loaded.
Privacy policy
UTM Builder (this page and the CyberMax UTM Builder Chrome extension) collects no personal data. Links are built in your browser; the last 25 links you copy are kept only in your browser's local storage, and you can clear them any time in the History tab. There are no accounts, analytics cookies or ads in the tool. The Chrome extension uses activeTab only to read the address of the tab you are on when you click its button, and contextMenus to add "Build a UTM link for this link" to the right-click menu. It never reads page content, keeps no browsing history and sends nothing to CyberMax. This web page counts anonymous page views; the extension does not.
Questions: cybermax.tools@gmail.com. Last updated 28 Sep 2026. © 2026 CyberMax.