# UTM link builder — UrlsTree

> Add UTM tags to any link so Google Analytics shows which post, bio or poster brought each visitor. Presets for Instagram, Facebook, LINE and TikTok.

Updated: 2026-10-22

Paste the link, pick where you will post it, and copy the tagged link. Google Analytics then reports each visit under that source.

Free, no sign-up: the tool runs in your browser at https://urlstree.com/tools/utm-builder, and nothing typed into it is sent to UrlsTree.

## Questions

**What are UTM tags?**
Small labels at the end of a link (utm_source, utm_medium, utm_campaign) that tell Google Analytics where a visitor came from.

**Which tags do I need?**
Source and medium at least, and a campaign name when you run a promotion. Keep them lowercase and the same every time so reports group them.

**Do UTM tags change where the link goes?**
No. The page opens as normal; only your analytics reads the tags.

More free tools: https://urlstree.com/tools

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Web page: https://urlstree.com/tools/utm-builder (Thai: https://urlstree.com/tools/utm-builder?lang=th)
More: https://urlstree.com/llms.txt · https://urlstree.com/llms-full.txt