All embed options live in Share → Embed. The Full screen toggle sits right under the code, and the Customize Embed switch opens the size, background, and scrollbar settings. Every option is baked into the code you copy: change something, click Copy Code again, and replace the code on your page. New to embedding? Start with How to Embed Your Form on a Website.
With Full screen on, the form first appears inline at whatever size you set. The moment a visitor taps or clicks anywhere on it, it expands to fill the whole screen, with an X in the corner to exit. Closing puts the form back in its place on the page and restores the scroll position. It works on desktop and mobile alike, and it is most useful on phones, where a 600 px box feels cramped. While the form is full screen, the page behind it cannot scroll.
Tip: since the form expands on its own, you can keep the inline size modest and let Full screen do the rest.
Off (default): the form's own background color fills the embed box. On: your page's background shows through, so the form sits on a gradient, image, or brand color without a visible rectangle around it.
For the card-style form skins (iSkin, Messenger, SmartSkin) this is always on and locked, shown as "Always on for this form style." Those skins float on the page by design.
Hides every scrollbar inside the embedded form. Scrolling with the wheel, trackpad, or finger still works. Use it with a fixed height when an inner scrollbar looks out of place in your design.
Fixed (default, 100%): the embed takes an exact width, in % or px. 100% means "as wide as the element you pasted it into", which is what you want most of the time.
Auto: the embed shrinks to the form's own content width. Handy for the card skins, so the card is not stretched. You can add an optional Minimum Width and Max Width.
Fixed (default, 600 px): the box keeps an exact height. If a step is taller than that, the visitor scrolls inside the box. Minimum is 100 px.
Auto: the box grows and shrinks to match the current step as the visitor moves through the form, so there is no inner scrolling and no empty space. Set a Minimum Height if you want to avoid the page jumping on short steps, and a Max Height if you need a cap (beyond it, the visitor scrolls inside the box).
Rule of thumb: Auto height for multi-step forms and long questions; Fixed when your page layout needs a stable block.
Closing the Share window resets these options to the defaults. Nothing is saved on the form itself; whatever you copied is what your page runs. To change a live embed, set the options again, copy, and replace the code on your page. If you only change the form (questions, design, endings), you do not need to touch the embed at all. Something not behaving as expected? See Embed Troubleshooting.
