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filesize
Advanced tools
Package description
The filesize npm package is a library designed to provide simple file size conversion and formatting. It allows users to convert raw file size numbers into human-readable strings, with support for multiple units and customization options. This can be particularly useful in applications where file sizes need to be displayed to users in a format that is easy to understand.
Basic file size formatting
Converts a file size in bytes to a human-readable string using the most appropriate unit. In this example, 1024 bytes are converted to '1 KB'.
"const filesize = require('filesize');
console.log(filesize(1024)); // '1 KB'"
Customizing the output
Allows customization of the output format, including rounding and the spacer between the number and the unit. This example shows no rounding and removes the space between the number and the unit.
"const filesize = require('filesize');
console.log(filesize(1024, {round: 0, spacer: ''})); // '1KB'"
Using different units
Supports using different unit standards, such as the International Electrotechnical Commission (IEC) standard, which uses 'KiB' instead of 'KB' for 1024 bytes.
"const filesize = require('filesize');
console.log(filesize(1024, {standard: 'iec'})); // '1 KiB'"
Similar to filesize, pretty-bytes converts byte values into a human-readable format. It focuses on simplicity and does not offer as many customization options as filesize, making it a good choice for straightforward use cases.
The bytes package also provides functionality for formatting byte sizes into human-readable strings. It offers a balance between simplicity and customization, with options to specify the number of decimal places and the units to use.
Changelog
Readme
filesize.js provides a simple way to get a human readable file size string from a number (float or integer) or string.
import filesize from "filesize";
filesize(265318, {base: 2, standard: "jedec"}); // "259.1 KB"
filesize()
accepts an optional descriptor Object as a second argument, so you can customize the output.
(number) Number base, default is 10
(boolean) Enables bit
sizes, default is false
(number) Specifies the symbol via exponent, e.g. 2
is MB
for base 2, default is -1
(boolean) Enables full form of unit of measure, default is false
(array) Array of full form overrides, default is []
(string || boolean) BCP 47 language tag to specify a locale, or true
to use default locale, default is ""
(object) Dictionary of options defined by ECMA-402 (Number.prototype.toLocaleString). Requires locale option to be explicitly passed as a string, otherwise is ignored.
(string) Output of function (array
, exponent
, object
, or string
), default is string
(boolean) Decimal place end padding, default is false
(number) Sets precision of numerical output, default is 0
(number) Decimal place, default is 2
(string) Rounding method, can be round
, floor
, or ceil
, default is round
(string) Decimal separator character, default is .
(string) Character between the result
and symbol
, default is " "
(string) Standard unit of measure, can be iec
or jedec
, default is iec
; can be overruled by base
(object) Dictionary of IEC/JEDEC symbols to replace for localization, defaults to english if no match is found
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.
import filesize from "filesize";
const size = filesize.partial({base: 2, standard: "jedec"});
size(265318); // "259.1 KB"
Copyright (c) 2022 Jason Mulligan Licensed under the BSD-3 license.
FAQs
JavaScript library to generate a human readable String describing the file size
We found that filesize demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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