Best Alternatives to Open Inspector in 2025
Open Inspector is a free, open-source browser extension that lets you hover over any website to instantly extract its design system—layout, styles, colors, typography, and assets—and export design tokens. It stands out for its privacy-first approach: it requests no site access, makes zero network requests, is MIT-licensed, and requires no account. While it's a powerful tool, you might be looking for alternatives that offer different features, broader browser support, or additional capabilities. Here are the best alternatives to Open Inspector, each with its own strengths and trade-offs.
CSS Peeper
CSS Peeper is a popular Chrome extension that provides a clean, visual way to inspect CSS. It lets you view colors, fonts, and assets without digging into DevTools. It's great for designers who want a quick overview of a site's styling. However, unlike Open Inspector, it may require site access and isn't open-source.
WhatFont
WhatFont is a lightweight extension focused specifically on identifying fonts on a webpage. Hover over text to see the font family, size, line-height, and color. It's ideal if typography is your main concern. It doesn't offer the broader design token export or privacy guarantees of Open Inspector.
ColorZilla
ColorZilla is a classic tool for color picking, gradient generation, and color analysis. It's perfect for extracting color palettes from any website. While it excels at color-related tasks, it doesn't provide a full design system inspection or token export like Open Inspector.
VisBug
VisBug is an open-source, browser-based design tool that lets you edit styles, move elements, and inspect designs directly in the browser. It's more interactive and allows live tweaking. However, it's not focused on exporting design tokens and may require more manual work.
Design Eye
Design Eye is a Chrome extension that analyzes a webpage's design and provides a summary of colors, fonts, and spacing. It's useful for quick audits. It's not open-source and may not offer the same level of privacy as Open Inspector.
Fonts Ninja
Fonts Ninja identifies fonts on any website and allows you to try them out. It's great for font discovery and has a nice UI. It's more limited in scope compared to Open Inspector, focusing primarily on typography.
Pesticide
Pesticide is a simple extension that outlines all elements on a page to help debug CSS layouts. It's useful for visualizing the box model and spacing. It doesn't extract design tokens or provide style details, making it a niche alternative.
Open Inspector offers a unique combination of privacy, open-source licensing, and comprehensive design system extraction. The alternatives listed here each have their own specialties: CSS Peeper for visual CSS inspection, WhatFont and Fonts Ninja for typography, ColorZilla for color picking, VisBug for live editing, Design Eye for quick audits, and Pesticide for layout debugging. Depending on your needs—whether it's deeper editing, specific font or color tools, or broader browser support—one of these may suit you better. However, if privacy and open-source are top priorities, Open Inspector remains a strong choice.