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filesize

JavaScript library to generate a human readable String describing the file size

filesize.js

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filesize.js provides a simple way to get a human readable file size string from a number (float or integer) or string.

Optional settings

filesize() accepts an optional descriptor Object as a second argument, so you can customize the output.

base

(number) Number base, default is 2

bits

(boolean) Enables bit sizes, default is false

exponent

(number) Specifies the SI suffix via exponent, e.g. 2 is MB for bytes, default is -1

fullform

(boolean) Enables full form of unit of measure, default is false

fullforms

(array) Array of full form overrides, default is []

output

(string) Output of function (array, exponent, object, or string), default is string

round

(number) Decimal place, default is 2

spacer

(string) Character between the result and suffix, default is " "

standard

(string) Standard unit of measure, can be iec or jedec, default is jedec; can be overruled by base

symbols

(object) Dictionary of SI/JEDEC symbols to replace for localization, defaults to english if no match is found

suffixes (deprecated: use 'symbols')

(object) Dictionary of SI/JEDEC symbols to replace for localization, defaults to english if no match is found

unix

(boolean) Enables unix style human readable output, e.g ls -lh, default is false

Examples

filesize(500);                        // "500 B" 
filesize(500, {bits: true});          // "4 Kb" 
filesize(265318, {base: 10});         // "265.32 kB" 
filesize(265318);                     // "259.1 KB" 
filesize(265318, {round: 0});         // "259 KB" 
filesize(265318, {output: "array"});  // [259.1, "KB"] 
filesize(265318, {output: "object"}); // {value: 259.1, suffix: "KB", symbol: "KB"} 
filesize(1, {symbols: {B: "Б"}});     // "1 Б" 
filesize(1024);                       // "1 KB" 
filesize(1024, {exponent: 0});        // "1024 B" 
filesize(1024, {output: "exponent"}); // 1 
filesize(265318, {standard: "iec"});  // "259.1 KiB" 
filesize(265318, {standard: "iec", fullform: true}); // "259.1 kibibytes" 
filesize(12, {fullform: true, fullforms: ["байтов"]});  // "12 байтов" 

Partial Application

filesize.partial() takes the second parameter of filesize() and returns a new function with the configuration applied upon execution. This can be used to reduce Object creation if you call filesize() without caching the descriptor in lexical scope.

const size = filesize.partial({standard: "iec"});
 
size(265318); // "259.1 KiB" 

How can I load filesize.js?

filesize.js supports AMD loaders (require.js, curl.js, etc.), node.js & npm (npm install filesize), or using a script tag.

License

Copyright (c) 2017 Jason Mulligan Licensed under the BSD-3 license.