Formbutton alternative: embeddable forms that match your site
Formbutton has a tight thesis: turn the bottom-right corner of any web page into a contact-form trigger. Click the button, a modal opens, fill out the form. For sites where a persistent pop-up button is the right UX, it's purpose-built and clean.
Formspring takes a more general approach: drop one URL into your <form action> (full HTML control), embed an iframe via <div data-formspring="abc123">, or link to a hosted full-page form. All three work for any site. The pop-up button UX is achievable but not the headline — wrap any form in your own modal trigger.
The broader differentiator is what happens after submission. Formbutton's pitch ends at "form submitted, you get an email." Formspring's pitch continues into dashboard, retention, signed webhooks, AI moderation, and multi-destination fan-out.
<!-- Iframe embed -->
<div data-formspring="abc123"></div>
<script src="https://formspring.io/embed.js" async></script>
<!-- Or inline HTML form -->
<form action="https://formspring.io/f/abc123" method="POST">
<input type="email" name="email" required>
<button>Send</button>
</form>Formspring vs Formbutton: feature comparison
| Feature | FormspringUs | Formbutton |
|---|---|---|
| Pop-up button widget | Build with your modal + iframe | Yes (built-in) |
| Iframe embed | Yes (`data-formspring`) | No |
| HTML form action | Yes | No |
| Full-page hosted form | Yes | No |
| Searchable dashboard | Yes | Limited |
| Pro starting price | $19/mo | $15+/mo |
| Stripe-pattern HMAC webhooks | Yes | Basic |
| AI moderation | Pro+ | No |
| Multi-destination fan-out | Yes | Limited |
Three embedding models to pick from
Formspring supports <form action=…> (full HTML form, your CSS), iframe embed via the embed.js loader (closest analog to Formbutton's widget), and full-page hosted form. Pick per use case. Formbutton commits you to one — the pop-up widget. Flexibility matters when you want a contact form on /contact (inline) and a quick widget on your blog (pop-up modal).
Building pop-up parity
If the pop-up modal is the UX you specifically want, build it in ~20 lines: a button that opens a modal, an iframe inside pointing at Formspring's hosted form URL, a close handler. Visitor experience is identical; the underlying receiver is Formspring.
What you gain on the receiving end
A dashboard with search and CSV export. Per-form retention rules. HMAC-signed webhooks for downstream verification. AI moderation on Pro+. Multi-destination fan-out — single submission goes to Slack, Notion, Sheets, custom webhook simultaneously. EU residency.
When Formbutton fits better
Single landing page, the pop-up button is the entire conversion UX, your operator wants drag-and-drop config without thinking about embedding patterns, and the receiving-side features don't matter.
Migration steps
- Decide your new embedding pattern: full HTML form, iframe embed, or hosted full-page link.
- Sign up, create a form.
- For pop-up parity: build a small modal trigger that opens an iframe pointing at Formspring's hosted form URL.
- For inline form parity: replace Formbutton's widget with a regular HTML
<form action=…>. - Configure thank-you behavior in Form → Settings.
- Test end-to-end.
- Remove Formbutton's script tag after a clean week.