UTM Link Builder

Build campaign URLs without typos. Presets for Meta, TikTok and bio links, live preview, one-click copy, and warnings for the mistakes that quietly break attribution: mixed casing, stray spaces, existing query strings, and campaign names you will not recognise in three months.

Destination URL

Presets

Source (utm_source)Medium (utm_medium)

Campaign (utm_campaign)

Content (utm_content)Term (utm_term)

Force lowercaseAnalytics tools treat Facebook and facebook as two different sources.

Your link

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Checks

The destination URL is missing or is not a valid http(s) address.
Source, medium and campaign are the three that matter. Fill all three.

Nothing leaves your browser. The last preset you used is remembered locally.

The three rules that keep attribution alive

Lowercase everything: Facebook and facebook are two rows in every report. Pick one casing and never break it.
Put an immutable ID in utm_content: Campaign names get renamed, ad accounts get shut down. The ad ID does not change, so put it in the link and keep a mapping file from launch day.
Hyphens, never spaces: A space becomes %20, and %20 becomes a typo the next time somebody copies the link by hand.