Tracking & Pre-fill help you understand where submissions come from and make forms faster to complete for specific audiences.
Source Tracking
Create named tracking links for each traffic source. Each link uses the same form URL but tags submissions with the source name, so you can see where responses originated.
Common tracking sources:
| Source name | Channel |
|---|
x | Posts on X (Twitter) |
facebook | Facebook posts or ads |
tiktok | TikTok bio or posts |
email | Email campaigns |
website | Links from your own site |
Creating a Tracking Link
Open Tracking & Pre-fill
Go to your form → Settings → Tracking & Pre-fill.
Add a source
Enter a name for the source (e.g. instagram).
Copy the link
Copy the generated tracking link and use it when sharing to that channel.
Pre-fill Links
Generate a link with certain fields already completed. Useful for personalized invitations or when you already know some of the submitter’s data.
Creating a Pre-fill Link
Open Tracking & Pre-fill
Go to your form → Settings → Tracking & Pre-fill and find the Pre-fill section.
Name the link
Enter a descriptive name so you can identify this pre-fill link later.
Set field values
Choose which fields to pre-fill and enter the values.
Copy the link
Copy the generated URL with pre-fill parameters included.
Use a pre-fill link with a locked field to pass a referral code or event name that submitters can’t change.
