Spacing Palette

Spacing Palette is a visualization tool that lets developers read every margin, padding, and gap on a web page at a glance. It frees you from opening DevTools and chasing the Styles panel every time you check spacing. Once enabled, the entire page is automatically color-coded, and px numbers are expressed at the center of each overlay. Values are grouped into three families: other even numbers in orange→red, multiples of 8 or 4 (8px grid compliant) in yellow-green→green, and odd numbers in blue→purple. Hovering fades non-matching overlays so target spacing stands out. You can turn the px badges on or off as needed. The floating menu lists each px value with its M / P / G counts. Hovering items in the list highlights the matching overlays, and clicking it scrolls the viewport to the target. If the targets are already visible, the badges animate to highlight the location. You can drag or collapse the menu so it never gets in the way. Use the context menu to toggle the extension, overlay visibility, or the px badges from anywhere on the page. For front-end engineers, UI designers, and QA teams who need precision in layout implementation.