# gzip-size

> Get the gzipped size of a string or buffer

## Install

```sh
npm install gzip-size
```

## Usage

```js
import {gzipSize, gzipSizeSync} from 'gzip-size';

const text = 'Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.';

console.log(text.length);
//=> 191

console.log(gzipSizeSync(text));
//=> 78
```

## API

### gzipSize(input, options?)

Returns a `Promise<number>` with the size.

### gzipSizeSync(input, options?)

Returns the size.

#### input

Type: `string | Buffer`

#### options

Type: `object`

Any [`zlib` option](https://nodejs.org/api/zlib.html#zlib_class_options).

### gzipSizeFromFile(path, options?)

Returns a `Promise<number>` with the size of the file.

#### path

Type: `string`

### gzipSizeFromFileSync(path, options?)

Returns the size of the file.

### gzipSizeStream(options?)

Returns a [`stream.PassThrough`](https://nodejs.org/api/stream.html#stream_class_stream_passthrough). The stream emits a `gzip-size` event and has a `gzipSize` property.

## Related

- [gzip-size-cli](https://github.com/sindresorhus/gzip-size-cli) - CLI for this module

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