UTM Link Checker
UTM Link Checker is a free tool that explains each tag in a tracked link, catches mistakes that split your Google Analytics reports, and gives a cleaned link.
- Free
- No sign-up
- Runs in your browser
UTM tags are the extra words at the end of a link — like ?utm_source=whatsapp&utm_campaign=diwali_sale — that tell Google Analytics where a visitor came from. One small mistake, such as a capital letter, a space or a misspelt tag, quietly splits or loses your campaign numbers. Paste any tracked link here to see what each tag means, catch the mistakes and get a cleaned, ready-to-share link.
Your workspace
Fill in the details above, then press the button to see your result.
Guide
How to use it
- 1Copy the tracked link exactly as you shared it — from your WhatsApp message, email, ad or QR code.
- 2Paste it into the box and press Check.
- 3Read what each tag means and fix anything marked in red or orange.
- 4Copy the cleaned link and use it everywhere you share this campaign.
What the results mean
- UTM tags
- Labels added to the end of a link so Google Analytics knows which campaign, website or post sent the visitor.
- Source and medium
- Source is where the visitor came from (instagram). Medium is the kind of channel (social). Analytics needs both.
- Unassigned
- The Google Analytics bucket for visits it cannot sort into a channel, usually because the medium is not a standard word.
- Click ID (gclid, fbclid)
- A code ad platforms add to a link for one person’s click. It should not be copied into links you share.
Common questions
Why do capital letters matter?
Google Analytics treats “Instagram” and “instagram” as two different sources. If different people on your team type it differently, your results are split across rows and look smaller than they are. Using lower case everywhere avoids this.
What medium should I use for WhatsApp?
Use utm_source=whatsapp with utm_medium=social for posts and groups, or utm_medium=sms for broadcast messages. Mediums like “whatsapp” are not recognised and end up under Unassigned.
How is this different from the UTM Builder?
The UTM Builder makes a new tracked link from scratch. This checker looks at a link you already have — perhaps one made by someone else or shared months ago — and tells you what is wrong with it.
Do UTM tags affect my Google ranking?
No. They only affect how visits are labelled in your analytics. Do not use them on links between your own pages, though — that restarts the visit and muddles your reports.