URL Encoder / Decoder
Encode or decode URLs and query values with percent-encoding, and inspect a URL's host, path and parameters.
UTM Builder: Campaign URL Generator
Add utm_source, utm_medium, utm_campaign and other tags to any link, keep naming consistent, and copy a clean tracking URL. Nothing is stored.
How to use
- Paste the landing page URL.
- Fill in source, medium and campaign (required), plus term, content or ID if you use them.
- Copy the tagged URL and use it in your campaign.
What this tool does
It adds the parameters with the browser’s URL API, so existing query strings and #fragments are preserved, and optionally lowercases values and replaces spaces, because analytics tools treat “Email” and “email” as different sources.
Why it matters
UTM tags tell your analytics which campaign, channel and creative sent each visit, so you can compare results instead of guessing.
Tips
- Agree on a naming convention (for example lowercase, hyphens) and stick to it.
- Never add UTM tags to internal links on your own site; they overwrite the original source.
Frequently asked questions
Which UTM parameters are required?
Source, medium and campaign are the core three. Term and content are optional; utm_id is used by some analytics tools to join cost data.
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