Hover and read
See selector, dimensions, colors, type, spacing, layout, and useful computed CSS in one floating panel.
CSS inspector Chrome extension
Inspect any page's CSS without opening DevTools.
CascadePeek adds a focused hover inspector to Chrome so frontend developers can read, copy, and test production styles faster.
Built for the moments DevTools feels too heavy.
Pin and move
Click to pin an element, then use arrow keys to move to parents, children, and siblings.
Copy what matters
Free users can copy selector, CSS, and HTML. Pro adds authored rules, tokens, editing, and component bundles.
Stay narrow
Uses activeTab and scripting only after the user clicks the extension, with license status stored locally.
Launch offer
$19 lifetime Pro license.
Designed to convert developers who need CSS inspection often enough to pay, but not enough to justify a high-priced tool.