pretty-bytes 
Convert bytes to a human readable string:
1337→1.34 kB
Useful for displaying file sizes for humans.
Note that it uses base-10 (e.g. kilobyte). Read about the difference between kilobyte and kibibyte.
Install
$ npm install pretty-bytes
Usage
const prettyBytes = require('pretty-bytes');
prettyBytes(1337);
//=> '1.34 kB'
prettyBytes(100);
//=> '100 B'
// Display file size differences
prettyBytes(42, {signed: true});
//=> '+42 B'
// Localized output using German locale
prettyBytes(1337, {locale: 'de'});
//=> '1,34 kB'API
prettyBytes(input, [options])
input
Type: number
The number to format.
options
Type: Object
signed
Type: boolean
Default: false
Include plus sign for positive numbers. If the difference is exactly zero a space character will be prepended instead for better alignment.
locale
Type: boolean string
Default: false (No localization)
- If
true: Localize the output using the system/browser locale. - If
string: Expects a BCP 47 language tag (For example:en,de, …)
Note: Localization should generally work in browsers. Node.js needs to be built with full-icu or system-icu. Alternatively, the full-icu module can be used to provide support at runtime.
Related
- pretty-bytes-cli - CLI for this module
License
MIT © Sindre Sorhus