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UTM Builder

Build trackable UTM campaign URLs for analytics.

JWT & API ToolsBrowser-only • PrivateFree

Destination URLutm_sourceutm_mediumutm_campaignutm_termutm_content

Tracking URL

Output will appear here...

Privacy First: All processing happens locally in your browser. Your data never leaves your device and is never uploaded to any server.

About UTM Builder

The UTM Builder creates trackable campaign URLs by adding the standard utm_source, utm_medium, utm_campaign, and related parameters to any link, so your analytics can attribute traffic correctly. It handles encoding and assembles a clean, ready-to-share URL. Building runs locally in your browser with nothing uploaded. Turn the finished link into a scannable code with the QR Code Generator, or inspect an existing link with the URL Query Parser.

How to Use

1Open UTM Builder and paste or type your data into the input area.
2Adjust any available options to match the result you want.
3Your output is generated instantly — no button-clicking required for most tools.
4Use the Copy or Download button to save your result.

Common Use Cases

Inspecting JWT claims while debugging authentication
Converting cURL commands into fetch or Axios code
Building and parsing query strings and tracking URLs
Looking up HTTP status codes during API development

Frequently Asked Questions

What UTM parameters should I set?

utm_source, utm_medium, and utm_campaign are the core three most analytics tools expect. utm_term and utm_content are optional for paid keywords and A/B variants. The builder covers all five.

Will these links track in Google Analytics?

Yes. UTM parameters are the standard Google Analytics uses to attribute campaign traffic, so links built here will show up under the source, medium, and campaign you specify.

Is UTM Builder free to use?

Yes. UTM Builder is completely free with no sign-up, no subscription, and no usage limits. Every tool on CodeUtilityKit is free forever.

Is my data safe when I use UTM Builder?

Absolutely. UTM Builder runs entirely in your browser. Your input is processed locally with JavaScript and is never sent to, stored on, or logged by any server — so it is safe even for private or sensitive data.