Prefill them even if they're not included in the form

With miniExtensions form, you have the choice to allow prefilling any field, including hidden ones. You can use this feature to send out forms with some prefilled IDs, for instance, without visually showing them in the form. It works by using the prefill_fieldName=parameter. Our form prefilling function works in the same way it does on Airtable Form. Go here for more details.

Use Cases

This extension can be useful in a lot of scenarios. You can use it for:

  • Assign unique IDs for participants
  • Segment participants in different groups
💡 Update

We added an auto-submit option to go along with this feature. You can now click on a link to update a record instantly. For example, send “Click here to Confirm” in an email and it instantly updates a field’s status to “checked” (without the user seeing a form, just a success message)

Prefill Hidden Airtable Fields in miniExtensions Form 1


Here’s an example for a form with some prefilled hidden fields. After you submit this form, the Source field (which is hidden) would be auto-filled with the word “Twitter”. You can check the results in the view below.

1. URL

The full URL in the demo above is:

2. Embed on your site

The form can be both shared as a URL or embedded in your website.

If you click on the sample view below, you’ll see the table that’s used for the demo above.


Last Updated

Supported features

Third Party Integration

8 Questions
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Site visitor
Site visitor

I’m not sure what I’m doing wrong. The form information is updating the records. By the prefill field is not. Any ideas?
Site visitor
Site visitor

When I submit the form, the prefilled field is not set. Can you help me understand why?

Site visitor
Site visitor

Is there any way to still display the prefilled field even if it is hidden?

Site visitor
Site visitor

The prefill is not filling in on the Airtable base.


Most frequent questions and answers

All of our plans allow for unlimited users using your extensions. Our plans have varying limits on miniExtensions collaborators.  You can find out more about our pricing model here.

There is no limit on how many bases you can install miniExtensions on. Learn more


We offer limited and unlimited plans. To learn more about how our limits work, see this article.


We have instructional videos for how to use each one of our extensions on the product page. They guide you step-by-step of how to set them up.


Yes! Please apply for a discount here.

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