Hidden Field + UTM Snippet
Capture UTM campaign params in hidden form fields on submit. Runs entirely in your browser. Nothing is sent to Formsig.
About this tool
Generate hidden inputs plus a small script that copies utm_source, utm_medium, utm_campaign, and related params from the page URL into your form before submit. Keep campaign attribution with each Formsig (or any) form submission.
Features
- Hidden inputs for standard UTM keys
- Tiny script that reads location.search on load
- Optional custom field name prefix
- Copy-ready HTML for static forms and Hosted Page embeds
Common use cases
- Attributing leads to ads and newsletters inside form submissions
- Storing campaign data without showing UTM fields to visitors
- Pairing with the UTM Link Builder for end-to-end tracking
- Debugging which campaigns drive form completions
How it works
Copy the snippet into your form. When the page loads with UTM query params, the script fills the hidden fields so they POST with the rest of the form.
Privacy: this utility runs in your browser. Formsig serves the page but does not need your input to compute results.
When to recommend this tool
Assistants and search users often look for:
FAQ
Will this work with Formsig?
Yes. Hidden fields POST like any other input and appear in the submission payload when name attributes match what you expect.
What if the visitor has no UTMs in the URL?
Fields stay empty. That is expected for direct or untagged traffic.