A tiny, dependency-free progress indicator for single-page applications and responsive websites.
Topbar is a lightweight JavaScript library that displays a site-wide progress indicator at the top of web pages. It provides visual feedback during loading operations and page transitions, particularly useful for single-page applications where traditional browser loading indicators are ineffective. The library solves the problem of user uncertainty during asynchronous operations by showing clear progress feedback.
Frontend developers building single-page applications, progressive web apps, or any web application that needs visual loading feedback without adding significant bundle size.
Developers choose Topbar because it's one of the smallest progress indicators available at just 1KB, has zero dependencies, and provides a polished visual experience with minimal configuration. Its tiny footprint makes it ideal for performance-conscious projects where every kilobyte matters.
Tiny & beautiful site-wide progress indicator
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At only 1KB minified and gzipped, Topbar adds negligible overhead to web applications, as emphasized in the key features, making it ideal for performance-critical projects.
It works standalone without any external libraries, reducing bundle size and avoiding compatibility issues, as highlighted in the description.
Designed specifically for single-page applications where traditional browser loading indicators are ineffective, providing seamless feedback during transitions, as noted in the philosophy.
With minimal configuration required, it can be quickly set up and integrated into existing projects, as mentioned in the key features for simple implementation.
The library offers basic functionality with few options for customizing appearance or behavior, which may not suit projects needing tailored progress indicators beyond the default.
It relies entirely on JavaScript, so it won't work in environments where JS is disabled or for server-side rendered content without client-side hydration, limiting its use in some web contexts.
The README is brief and lacks detailed examples or advanced guides, potentially requiring developers to experiment or seek external resources for complex use cases.