Next.js Progressbar

A simple Next.js progressbar component using NProgress.

I've created this Blog to help you create your own progressbar

Demo: https://demo-nextjs-progressbar.vercel.app

How to install?

npm i nextjs-progressbar

How to use?

After installing the package, import NextNProgress in your pages/_app.js file:

import NextNProgress from 'nextjs-progressbar';

And for rendering add <NextNProgress /> to your return() in MyApp():

import NextNProgress from 'nextjs-progressbar';

export default function MyApp({ Component, pageProps }) {
  return (
    <>
      <NextNProgress />
      <Component {...pageProps} />;
    </>
  );
}

Default Config

If no props are passed to <NextNProgress />, below is the default configuration applied.

<NextNProgress color="#29D" startPosition={0.3} stopDelayMs={200} height={3} showOnShallow={true} />

color: to change the default color of progressbar. You can also use rgb(,,) or rgba(,,,).
startPosition: to set the default starting position : 0.3 = 30%.
stopDelayMs: time for delay to stop progressbar in ms.
height: height of progressbar in px.
showOnShallow: You can choose whether you want the progressbar to be displayed if you're using shallow routing. It takes a boolean. Learn more about shallow routing in Next.js docs.

Advanced Config

Adding nonce

We use internal css in this package. If you are using csp, you can add nonce to the <style> tag by providing nonce prop to <NextNProgress /> component.

<NextNProgress nonce="my-nonce" />

Custom CSS

You can use transformCSS prop to pass custom css. Note: You must return a JSX.Element from the function.

<NextNProgress
  transformCSS={(css) => {
    // css is the default css string. You can modify it and return it or return your own css.
    return <style>{css}</style>;
  }}
/>

Other Configs

You can use other configurations which NProgress provides by adding a JSON in options props.

<NextNProgress options={{ easing: 'ease', speed: 500 }} />