The best alternatives to Polypane are Responsive Viewer, EmailThis, and LambdaTest. If these 3 options don't work for you, we've listed a few more alternatives below.
A Chrome extension to show multiple screens in one view. the extension will help front-end developers to test multiple screens while developing responsive websites/applications.
EmailThis removes clutter from web pages, creates a readable view and sends that to you as a beautiful email that you can read later from any device, even offline!
LambdaTest is a GenAI-powered Quality Engineering Platform that empowers teams to test intelligently, smarter, and ship faster. Built for scale, it offers a full-stack testing cloud with 10K+ real devices and 3,000+ browsers.
Design tokens are the smallest parts of your design: colors, typography, spacing, etc. With them, you can make consistent experiences across different parts of your website and app and even across projects.
Shared browser compatibility config for popular JavaScript tools like Autoprefixer, Babel, ESLint, Next.js, PostCSS, and Webpack. With Browserslist, your modern web apps will be accessible for diverse global audience and load faster.