Free UTM Builder & Campaign URL Generator

How the UTM builder turns your inputs into a trackable URL

A UTM builder appends campaign tags to your destination link so analytics tools can report where each visit came from. This one also cleans every tag as it builds the link, so a poster, a flyer, and a table tent for the same campaign don't end up as three separate rows in your reports.

Everything runs in your browser. Your URL and campaign names are never sent to a server, saved, or logged.

What is a UTM code?

A UTM code is the string of tags added to the end of a web address after the question mark, such as ?utm_source=table-tent&utm_medium=qr. You will also see it called a UTM tag, a UTM parameter or a campaign URL. The code does not change the page. It only tells your analytics tool where the visit came from, and a UTM code generator saves you from typing and formatting it by hand.

The five tags it writes

The tool builds a standard campaign URL using the parameters Google Analytics documents for manual tagging. Three are required; two are optional.

It does not write utm_id, utm_source_platform, or the newer creative-format tags. If an ad platform hands you a campaign ID to pass through unchanged, add it to the link yourself after copying.

How each value is cleaned

When you press Generate UTM URL, every tag value runs through the same four steps before it goes into the link, and the field updates to show the cleaned version:

1. Trim spaces from the start and end.
2. Convert every letter to lowercase.
3. Replace any run of spaces with a single hyphen.
4. Remove every character that isn't a letter, digit, hyphen, or underscore.

That last step is worth watching. Accented letters and symbols are removed rather than converted, so the input and the output can differ more than you expect:

If a value matters, type it in the final form you want: lowercase, hyphen-separated, plain ASCII.

How the link is assembled

The tool takes your Website URL as entered, with two adjustments:

• If it doesn't start with http:// or https://, then https:// is added to the front.
• The tags are joined on with ? if the URL has no query string yet, or & if it already contains a ?.

The required tags are always written in the order source, medium, campaign, followed by term and content when you have filled them in. Each value is percent-encoded, though after cleaning there is rarely anything left that needs it.

The quick channel presets

The five preset buttons (Print Poster, Flyer / Mailer, Packaging Label, Tabletop Tent, and Business Card) fill in Campaign Source and Campaign Medium for you, and set a starter Campaign Name only if that field is still empty. Treat them as a starting point for offline placements and adjust any value before you generate.

Example: tagging a table-tent QR code for a café

Say Riverside Café prints a QR code on the table tents for its autumn menu launch, and wants scans from the window seats tracked separately from the rest of the room. (riverside-cafe.example is a placeholder domain; you would use your real one.) You enter:

The tool prepends https://, sees no existing ?, and joins the tags in order. The result box shows:

Press Copy URL to take that link, or Create QR Code to open the generator with the URL already loaded. For the next placement (the counter sign, say), reuse the same source, medium, and campaign, and change only Campaign Content to counter-sign.

What the tagged URL tells you, and what it doesn't

Once someone opens the link, Google Analytics 4 reads the tags and files the visit under Session source, Session medium, and Session campaign in the Reports → Acquisition → Traffic acquisition report. You can then compare visits, engaged sessions, and key events by placement.

What a UTM tag can't do: count scans, count people, or record anything that happens before the link opens. Someone who scans a code, reads the URL preview, and closes it never reaches your site and never appears in analytics. A blocked script, a declined consent prompt, or a redirect that strips the query string each cost you the visit too. For how those numbers behave in practice, and how redirect analytics differ, see the QR code tracking guide.

UTM tags vs. dynamic-code scan tracking

Two different things get called "QR tracking", and they measure at different points.

For a short campaign pointing at a page you already measure, UTM-tagged static codes are usually enough, and you own the whole chain. The static vs. dynamic comparison covers the trade-offs in full.

Tips, limits, and common mistakes

• Don't paste a URL with a # fragment: the tags are added to the end of whatever you type, so example.com/page#menu becomes example.com/page#menu?utm_source=…; the tags sit inside the fragment and never reach analytics. Remove the #menu part first.
• Strip existing utm_ tags before pasting: if your link already carries them, the tool adds a second set rather than replacing the old one, which makes attribution unpredictable.
• Accented and non-Latin characters vanish: as the cleaning table above shows, they are deleted, not transliterated. Spell campaign names in plain ASCII.
• Keep personal data out of the tags: names, emails, and customer IDs in a URL end up in browser history, server logs, and shared screenshots.
• Match your existing naming: the tool lowercases for you, but it can't know you have been writing newsletter elsewhere and typing email-newsletter here. Pick one convention and reuse it.
• It builds one link at a time: for dozens of placements, build a master link, create the QR code, then vary utm_content per placement by hand or with the bulk generator.