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@vslutov/gulp-mozjpeg

v0.0.10

Published

Gulp plugin for mozjpeg

Downloads

1

Readme

@vslutov/gulp-mozjpeg Build Status

Gulp plugin for mozjpeg

Key difference with the imagemin: the ability to convert png to jpg files as well as jpg.

Install

$ npm install @vslutov/gulp-mozjpeg mozjpeg

Usage

const gulp = require('gulp');
const gulpMozjpeg = require('@vslutov/gulp-mozjpeg');

gulp.task('mozjpeg', () =>
  gulp.src('src/*.{jpg,png}')
    .pipe(gulpMozjpeg())
    .pipe(gulp.dest('dist'))
)

API

gulpMozjpeg([options])

Returns a vinyl-stream.

options

quality

Type: number

Compression quality, in range 0 (worst) to 100 (perfect).

progressive

Type: boolean Default: true

false creates baseline JPEG file.

targa

Type: boolean Default: false

Input file is Targa format (usually not needed).

revert

Type: boolean Default: false

Revert to standard defaults instead of mozjpeg defaults.

fastCrush

Type: boolean Default: false

Disable progressive scan optimization.

dcScanOpt

Type: number 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
trellis

Type: boolean Default: true

Trellis optimization.

trellisDC

Type: boolean Default: true

Trellis optimization of DC coefficients.

tune

Type: string Default: hvs-psnr

Set Trellis optimization method. Available methods: psnr, hvs-psnr, ssim, ms-ssim

overshoot

Type: boolean Default: true

Black-on-white deringing via overshoot.

arithmetic

Type: boolean Default: false

Use arithmetic coding.

dct

Type: string Default: int

Set DCT method:

  • int Use integer DCT
  • fast Use fast integer DCT (less accurate)
  • float Use floating-point DCT
quantBaseline

Type: boolean Default: false

Use 8-bit quantization table entries for baseline JPEG compatibility.

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 kilobytes.

sample

Type: string[]

Set component sampling factors. Each item should be in the format HxV, for example 2x1.

buffer

Type: buffer

Buffer to optimize.

License

AGPLv3+ © Imagemin