Cornucopia

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

Cornucopia is an open-source developer extension for Chrome. It includes a colour picker and a font picker, and it can measure the page, draw a baseline grid, resize the viewport, rename a tab, and clear this site's cache. Click the toolbar icon, pick a tool, and inspect the page you are looking at. Nothing is uploaded. 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. - Colour picker. Colour reads a pixel, saves it to a session palette, and shows contrast for the two newest colours. - 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. - Rename tab gives the current tab a name that stays after a refresh or a browser restart, until the tab is closed or the name is cleared. - Clear site data deletes cookies and cache for the current site after you confirm, then reloads the tab.