Cornucopia

Open-source developer extension: color picker, font picker, measure, viewport, and clear site cache. Local only.

Cornucopia is an open-source developer extension for Chrome. It includes a color picker and a font picker, and it can measure the page, draw a baseline grid, resize the viewport, and clear this site's cache. Click the toolbar icon, pick a tool, and inspect the page you are looking at. Nothing is uploaded. There is no account and no analytics. Source code: https://github.com/tgalizia/cornucopia - Font picker. Typography reads the font under the pointer. Click to pin the card and copy CSS. - Color picker. Color reads a pixel, saves it to a session palette, and shows contrast for the two newest colors. - Measure outlines an element or a rectangle you drag. - Grid draws a baseline grid you can resize. - Viewport resizes the window to a common width, or a custom size, and can restore it. - Clear site data deletes cookies and cache for the current site after you confirm, then reloads the tab.