148 lines
2.6 KiB
Markdown
148 lines
2.6 KiB
Markdown
# imagemin-mozjpeg [](https://travis-ci.org/imagemin/imagemin-mozjpeg) [](https://ci.appveyor.com/project/ShinnosukeWatanabe/imagemin-mozjpeg)
|
|
|
|
> mozjpeg imagemin plugin
|
|
|
|
|
|
## Install
|
|
|
|
```
|
|
$ npm install --save imagemin-mozjpeg
|
|
```
|
|
|
|
|
|
## Usage
|
|
|
|
```js
|
|
const imagemin = require('imagemin');
|
|
const imageminMozjpeg = require('imagemin-mozjpeg');
|
|
|
|
imagemin(['images/*.jpg'], 'build/images', {use: [imageminMozjpeg()]}).then(() => {
|
|
console.log('Images optimized');
|
|
});
|
|
```
|
|
|
|
|
|
## API
|
|
|
|
### imageminMozjpeg([options])(buffer)
|
|
|
|
Returns a promise for a buffer.
|
|
|
|
#### options
|
|
|
|
##### quality
|
|
|
|
Type: `number`
|
|
|
|
Compression quality. Min and max are numbers in range 0 (worst) to 100 (perfect).
|
|
|
|
##### progressive
|
|
|
|
Type: `boolean`<br>
|
|
Default: `true`
|
|
|
|
`false` creates baseline JPEG file.
|
|
|
|
##### targa
|
|
|
|
Type: `boolean`<br>
|
|
Default: `false`
|
|
|
|
Input file is Targa format (usually not needed).
|
|
|
|
##### revert
|
|
|
|
Type: `boolean`<br>
|
|
Default: `false`
|
|
|
|
Revert to standard defaults instead of mozjpeg defaults.
|
|
|
|
##### fastcrush
|
|
|
|
Type: `boolean`<br>
|
|
Default: `false`
|
|
|
|
Disable progressive scan optimization.
|
|
|
|
##### dcScanOpt
|
|
|
|
Type: `number`<br>
|
|
Default: `1`
|
|
|
|
Set DC scan optimization mode.
|
|
|
|
* `0` One scan for all components
|
|
* `1` One scan per component
|
|
* `2` Optimize between one scan for all components and one scan for 1st component plus one scan for remaining components
|
|
|
|
##### notrellis
|
|
|
|
Type: `boolean`<br>
|
|
Default: `false`
|
|
|
|
Disable [trellis optimization](https://en.wikipedia.org/wiki/Trellis_quantization).
|
|
|
|
##### notrellisDC
|
|
|
|
Type: `boolean`<br>
|
|
Default: `false`
|
|
|
|
Disable trellis optimization of DC coefficients.
|
|
|
|
##### tune
|
|
|
|
Type: `string`<br>
|
|
Default: `hvs-psnr`
|
|
|
|
Set trellis optimization method. Available methods: `psnr`, `hvs-psnr`, `ssim` and `ms-ssim`
|
|
|
|
##### noovershoot
|
|
|
|
Type: `boolean`<br>
|
|
Default: `false`
|
|
|
|
Disable black-on-white deringing via overshoot.
|
|
|
|
##### arithmetic
|
|
|
|
Type: `boolean`<br>
|
|
Default: `false`
|
|
|
|
Use [arithmetic coding](https://en.wikipedia.org/wiki/Arithmetic_coding).
|
|
|
|
##### quantTable
|
|
|
|
Type: `number`
|
|
|
|
Use predefined quantization table.
|
|
|
|
* `0` JPEG Annex K
|
|
* `1` Flat
|
|
* `2` Custom, tuned for MS-SSIM
|
|
* `3` ImageMagick table by N. Robidoux
|
|
* `4` Custom, tuned for PSNR-HVS
|
|
* `5` Table from paper by Klein, Silverstein and Carney
|
|
|
|
##### smooth
|
|
|
|
Type: `number`
|
|
|
|
Set the strength of smooth dithered input. (1...100)
|
|
|
|
##### maxmemory
|
|
|
|
Type: `number`
|
|
|
|
Set the maximum memory to use in kbytes.
|
|
|
|
#### buffer
|
|
|
|
Type: `buffer`
|
|
|
|
Buffer to optimize.
|
|
|
|
|
|
## License
|
|
|
|
MIT © [imagemin](https://github.com/imagemin)
|