Javascript Bundle Size is a cross-browser extension developed by Viktor Razumov that aims to help frontend developers easily compare the sizes of JavaScript bundles. As developers often face the challenge of choosing a library with a minimal footprint, this extension provides a convenient solution.

One of the key features of Javascript Bundle Size is its ability to automatically request and display bundle size data on npm and GitHub project pages. By doing so, developers can quickly assess the size of different libraries and make informed decisions about which ones to use.

With this extension, frontend developers no longer need to manually search for bundle size information or rely on external tools. Javascript Bundle Size streamlines the process, saving developers valuable time and effort.

Overall, Javascript Bundle Size is a useful tool for frontend developers who want to compare JavaScript bundle sizes effortlessly. It simplifies the decision-making process and ensures that developers can choose libraries that best suit their needs.