What is UTM? A practical guide to campaign links

What question does a UTM link answer?

One product page might appear in an Instagram post, an email newsletter and a poster QR code. Visits to that same page do not, by themselves, tell you which promotion worked. UTM tags describe where you shared the link so an analytics system can distinguish those sources. The name comes from Urchin Tracking Module.

A tag is not a click counter. The destination website needs analytics that can read the parameters. Astrotor builds the URL; it does not track visitors or connect to your analytics account. Consent choices, tracking configuration and redirects can affect reporting, so clicks and recorded sessions need not match.

Source, medium and campaign: three different jobs

• utm_source identifies the referrer, such as instagram, newsletter or store_poster.
• utm_medium describes the channel: social, email or cpc for paid search.
• utm_campaign groups links under one promotion, such as summer_sale.

Keep the campaign name consistent across the newsletter and Instagram promotion while changing source and medium. Optional utm_content distinguishes creatives or buttons; utm_term identifies a paid keyword; utm_id supplies a campaign identifier.

Read a tagged URL step by step

https://example.com/summer?utm_source=instagram&utm_medium=social&utm_campaign=summer_sale

The destination is /summer, the source is Instagram, the medium is social and the campaign is the summer sale. A question mark introduces the first parameter; & separates the rest. A link builder handles these separators and encodes special characters.

Mixing instagram and Instagram can create separate values in reports. Agree on short, descriptive names with your team. The step-by-step UTM guide shows how to apply this to several placements.

Where to use UTM tags—and their limits

Use tags for external campaigns: newsletters, social posts, ads and QR codes. Tagging ordinary navigation within your own site can complicate attribution. Values are visible to anyone receiving the URL, so do not include names, email addresses or other personal information.

UTM parameters do not replace advertising platforms’ automatic tagging or conversion setup. Check your measurement plan before changing existing ad tags. Google Analytics explains campaign URL reporting; also open and test your finished link before publishing it.