Form Builder Layouts and Field Width in Sparkforge

By Sparkforge Support Team ·Last reviewed May 3, 2026

Sparkforge form builder supports three layouts (single column, two column, single line) and percentage-based field widths so you can design responsive, compact forms without custom CSS.

The Sparkforge form builder gives you three layout options and a field-width control so forms scale cleanly on every screen.

Layout options

Single Column: the classic vertical layout — fields stacked one below the other.
Two Column: what used to be called inline forms. Fields sit side-by-side for a balanced, compact form.
Single Line: up to 5 fields in one horizontal row for streamlined, minimalist designs (think email + zip + button signup bars).

Field width as a percentage

Field Width lets you set each field's width as a percentage of the total form width. Fields scale proportionally on resize, so the same form looks right on desktop, tablet, and mobile.

How to switch layouts

Open the form builder from your dashboard.
Choose your layout: Single Column, Two Column, or Single Line.
Adjust each field's width using the new Field Width setting.

What happens to existing forms

Old forms automatically map to a layout when opened in the builder — Single Column or Two Column based on the previous Inline Form setting.
Old forms in Preview keep working and respect the original Inline Form settings.
Single Line layouts are limited to 5 fields.

Frequently Asked Questions

Will my old forms break with the new layout system?

No. Old forms keep working in Preview with their original inline form settings. When opened in the builder, they map automatically to Single Column or Two Column.

How many fields can I put in a Single Line layout?

Up to 5 fields in one horizontal row. For more fields, use Two Column or Single Column.

Can I mix field widths in the same form?

Yes. Field Width is set per field as a percentage of the form width, so you can combine wide and narrow fields in the same row.

Does the new layout affect mobile rendering?

Percentage-based widths scale proportionally, so forms stay responsive on small screens without custom CSS.