Embedding Fillio Forms

Three ways to add a Fillio form to any website: Standard, Popup, and Full Page.

Embed Modes

Choose the mode that fits your layout.

Standard - Inline embed inside a page section
Popup - Opens as a modal overlay when triggered
Full Page - Takes over an entire HTML page

Standard Embed

Paste the code into any HTML page. The form renders as an inline iframe.

Embed Code

<iframe data-fillio-src="https://fillio.so/embed/YOUR_FORM_ID" width="100%" height="800" frameborder="0" marginheight="0" marginwidth="0" title="Form" loading="lazy"></iframe>
<script>var d=document,w="https://fillio.so/widgets/embed.js",v=function(){"undefined"!=typeof Fillio?Fillio.loadEmbeds():d.querySelectorAll("iframe[data-fillio-src]:not([src])").forEach((function(e){e.src=e.dataset.fillioSrc}))};if("undefined"!=typeof Fillio)v();else if(d.querySelector('script[src="'+w+'"]')==null){var s=d.createElement("script");s.src=w,s.onload=v,s.onerror=v,d.body.appendChild(s);}</script>

Options

Append these query parameters to the embed URL to customize behavior.

Parameter	Description
?hideTitle=1	Hides the form title inside the embed
?transparentBackground=1	Removes the white background from the embed frame
?dynamicHeight=1	Resizes the iframe automatically to match the form height

Popup Embed

Trigger the form from any button or link. Requires loading the Fillio widget script.

1. Add the Script

<script async src="https://fillio.so/widgets/embed.js"></script>

2. Trigger with a Button

<button data-fillio-open="YOUR_FORM_ID" data-fillio-width="500">Open Form</button>

3. Trigger with JavaScript

Fillio.openPopup('YOUR_FORM_ID', {
  width: 500,
  hideTitle: false
});

Data Attributes

Attribute	Description
data-fillio-open	Form ID (required)
data-fillio-width	Popup width in pixels
data-fillio-hide-title	Set to 1 to hide the form title

Full Page Embed

Use this HTML template when the form should fill the entire viewport.

<html>
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <title>Form</title>
    <script async src="https://fillio.so/widgets/embed.js"></script>
    <style type="text/css">
      html { margin: 0; height: 100%; overflow: hidden; }
      iframe { position: absolute; top: 0; right: 0; bottom: 0; left: 0; border: 0; }
    </style>
  </head>
  <body>
    <iframe data-fillio-src="https://fillio.so/embed/YOUR_FORM_ID" width="100%" height="100%" frameborder="0" marginheight="0" marginwidth="0" title="Form"></iframe>
  </body>
</html>

Options

Append these query parameters to the embed URL to customize behavior.

Parameter	Description
?transparentBackground=1	Removes the white background from the embed frame