grunt-image-size-export

This is a grunt wrapper for image-size-export.

Pass a folder of images to this module and get infos like:

• width
• height
• name
• path
• breakpoint (when you provide this information in your filename)

Written with ImageSize.

Installation

npm install grunt-image-size-export

Usage

Read picture infos from a provided source, process its infos and output processed infos to a custom output file (default = JSON).

When your file structure looks like that:

├───tmp
│   └───pictures
│       ├───carousel
│       │   └───stage
│       │           pic-01--1025.jpg
│       │           pic-01--1025_2x.jpg
│       │           pic-01--320.jpg
│       │           pic-01--320_2x.jpg
│       │           pic-01--769.jpg
│       │
│       └───marginal
│           ├───contact
│           │       pic-01--480.jpg
│           │       pic-01--480_2x.jpg
│           │       pic-01--768.jpg
│           │       pic-01--768_2x.jpg
│           │       pic-01--769.jpg
│           │       pic-01--769_2x.jpg
│           │
│           └───images
│                   pic-01--480.jpg
│                   pic-01--480_2x.jpg
│                   pic-01--640.jpg
│                   pic-01--640_2x.jpg
│                   pic-01--768.jpg
│                   pic-01--768_2x.jpg
│                   pic-01--769.jpg
│                   pic-01--769_2x.jpg

You will get one of the following outputs:

Simple:

This output is the standard output and fully adaptable with a handlebars template.

[
    {
        "breakpoint": "1025",
        "name": "pic-01--1025.jpg",
        "width": 1344,
        "height": 536,
        "path": "tmp/pictures/carousel/stage/pic-01--1025.jpg"
    },
    {
        "breakpoint": "1025_2x",
        "name": "pic-01--1025_2x.jpg",
        "width": 2051,
        "height": 817,
        "path": "tmp/pictures/carousel/stage/pic-01--1025_2x.jpg"
    },
    {
        "...": "..."
    }
]

Folders:

This output is categorized by folder names. Just use the option categorizeBy and define the value folders.

[
    {
        "carousel-stage": [
            {
                "breakpoint": "1025",
                "name": "pic-01--1025.jpg",
                "width": 1344,
                "height": 536,
                "folder": "carousel-stage",
                "path": "tmp/pictures/carousel/stage/pic-01--1025.jpg"
            },
            {
                "...": "..."
            }
        ]
    },
    {
        "marginal-contact": [
            {
                "...": "..."
            }
        ]
    },
    {
        "marginal-images": [
            {
                "...": "..."
            }
        ]
    }
]

Breakpoints:

This output is categorized by breakpoints. Just use the option categorizeBy and define the value breakpoints.

[
    {
        "1025": [
            {
                "breakpoint": "1025",
                "name": "pic-01--1025.jpg",
                "width": 1344,
                "height": 536,
                "folder": "stage",
                "path": "tmp/pictures/carousel/stage/pic-01--1025.jpg"
            }
        ]
    },
    {
        "1025_2x": [
            {
                "...": "..."
            }
        ]
    },
    {
        "320": [
            {
                "...": "..."
            }
        ]
    }
]

Options

All options of image-size-export are available.

Usage

You can enable this plugin in the Gruntfile.js of your project like that:

grunt.loadNpmTasks('grunt-image-size-export');

Example

To get all image infos, here are some setting examples:

imageSizeExport: {
    options: {
        path: 'tmp/pictures/**/*.jpg',
        breakpointDelimiter: '--'
    },
    simple: {
        options: {
            output: 'test/expected/simple.json'
        }
    },
    custom: {
        options: {
            output: 'test/expected/custom.yaml',
            template: 'test/source/custom.hbs'
        }
    },
    folders: {
        options: {
            output: 'test/expected/folders.json',
            categorizeBy: 'folders',
            folderDepth: 2
        }
    },
    breakpoints: {
        options: {
            output: 'test/expected/breakpoints.json',
            categorizeBy: 'breakpoints'
        }
    }
}

License

Copyright (c) 2015 Sebastian Fitzner. Licensed under the MIT license.

ToDos

• Add tests