1.0.5 • Published 1 year ago

multer-sharp-resizer v1.0.5

Weekly downloads
93
License
MIT
Repository
github
Last release
1 year ago

multer-sharp-resizer

Multer-sharp-resizer is a package for Resizing single/multiple images with node.js, express.js, multer.js Multer documentation and sharp.js sharp documentation.

Multer-sharp-resizer: Resize one image or multiple images to multiple sizes with node.js, express.js, multer.js

Documentation

Node.js uploading image with multer and multer-sharp-resizer

Installation

npm:

$ npm i multer multer-sharp-resizer

yarn:

$ yarn add multer multer-sharp-resizer

Usage

const express = require("express");
const multer = require("multer");
const MulterSharpResizer = require("multer-sharp-resizer");

    ...

    const today = new Date();
    const year = today.getFullYear();
    const month = `${today.getMonth() + 1}`.padStart(2, "0");

    const filename = `gallery-${Date.now()}`;

    const sizes = [
      {
        path: "original",
        width: null,
        height: null,
      },
      {
        path: "large",
        width: 800,
        height: 800,
      },
      {
        path: "medium",
        width: 300,
        height: 300,
      },
      {
        path: "thumbnail",
        width: 100,
        height: 100,
      },
    ];

    const uploadPath = `./public/uploads/${year}/${month}`;

    const fileUrl = `${req.protocol}://${req.get(
      "host"
    )}/uploads/${year}/${month}`;

    // sharp options
    const sharpOptions = {
      fit: "contain",
      background: { r: 255, g: 255, b: 255 },
    };

    // create a new instance of MulterSharpResizer and pass params
    const resizeObj = new MulterSharpResizer(
      req,
      filename,
      sizes,
      uploadPath,
      fileUrl,
      sharpOptions
    );

    // call resize method for resizing files
    await resizeObj.resize();

    // get details of uploaded files
    const images = resizeObj.getData();

    ....

example for uploading multiple/single images:

const express = require("express");
const app = express();
const multer = require("multer");
const MulterSharpResizer = require("multer-sharp-resizer");

app.use(express.static(`${__dirname}/public`));
app.use(express.json());

const multerStorage = multer.memoryStorage();

// Filter files with multer
const multerFilter = (req, file, cb) => {
  if (file.mimetype.startsWith("image")) {
    cb(null, true);
  } else {
    cb("Not an image! Please upload only images.", false);
  }
};

const upload = multer({
  storage: multerStorage,
  fileFilter: multerFilter,
});

// *****  Multer .fields() *****
const uploadProductImages = upload.fields([
  { name: "cover", maxCount: 2 },
  { name: "gallery", maxCount: 4 },
]);

// *****  Multer .array() *****
// const uploadProductImages = upload.array("gallery", 4);

// *****  Multer .single() *****
// const uploadProductImages = upload.single("cover");

const resizerImages = async (req, res, next) => {
  const today = new Date();
  const year = today.getFullYear();
  const month = `${today.getMonth() + 1}`.padStart(2, "0");

  // Used by multer .array() or .single
  // const filename = `gallery-${Date.now()}`;

  // Used by multer .fields and filename must be same object prop
  const filename = {
    cover: `cover-${Date.now()}`,
    gallery: `gallery-${Date.now()}`,
  };

  const sizes = [
    {
      path: "original",
      width: null,
      height: null,
    },
    {
      path: "large",
      width: 800,
      height: 950,
    },
    {
      path: "medium",
      width: 300,
      height: 450,
    },
    {
      path: "thumbnail",
      width: 100,
      height: 250,
    },
  ];

  const uploadPath = `./public/uploads/${year}/${month}`;

  const fileUrl = `${req.protocol}://${req.get(
    "host"
  )}/uploads/${year}/${month}`;

  // sharp options
  const sharpOptions = {
    fit: "contain",
    background: { r: 255, g: 255, b: 255 },
  };

  // create a new instance of MulterSharpResizer and pass params
  const resizeObj = new MulterSharpResizer(
    req,
    filename,
    sizes,
    uploadPath,
    fileUrl,
    sharpOptions
  );

  // call resize method for resizing files
  await resizeObj.resize();
  const getDataUploaded = resizeObj.getData();

  // Get details of uploaded files: Used by multer fields
  req.body.cover = getDataUploaded.cover;
  req.body.gallery = getDataUploaded.gallery;

  // Get details of uploaded files: Used by multer .array() or .single()
  // req.body.cover = getDataUploaded;
  // req.body.gallery = getDataUploaded;

  next();
};

const createProduct = async (req, res, next) => {
  res.status(201).json({
    status: "success",
    cover: req.body.cover,
    gallery: req.body.gallery,
  });
};

// route for see results of uploaded images
app.post("/products", uploadProductImages, resizerImages, createProduct);

const port = 8000;
app.listen(port, () => console.log(`app running on port ${port}...`));

Outputs of above examples:

// example uploading multiple files
// result: uploaded multiple images with resizing
{
    "status": "success",
    "data": {
        "gallery": [
            {
                "originalname": "kal-visuals-b1Hg7QI-zcc-unsplash.jpg",
                "original": {
                    "filename": "gallery-1590999763786-0-original.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/original/gallery-1590999763786-0-original.jpeg"
                },
                "large": {
                    "filename": "gallery-1590999763786-0-large.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/large/gallery-1590999763786-0-large.jpeg"
                },
                "medium": {
                    "filename": "gallery-1590999763786-0-medium.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/medium/gallery-1590999763786-0-medium.jpeg"
                },
                "thumbnail": {
                    "filename": "gallery-1590999763786-0-thumbnail.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/thumbnail/gallery-1590999763786-0-thumbnail.jpeg"
                }
            },
            {
                "originalname": "lesly-juarez-RukI4qZGlQs-unsplash.jpg",
                "original": {
                    "filename": "gallery-1590999763786-1-original.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/original/gallery-1590999763786-1-original.jpeg"
                },
                "large": {
                    "filename": "gallery-1590999763786-1-large.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/large/gallery-1590999763786-1-large.jpeg"
                },
                "medium": {
                    "filename": "gallery-1590999763786-1-medium.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/medium/gallery-1590999763786-1-medium.jpeg"
                },
                "thumbnail": {
                    "filename": "gallery-1590999763786-1-thumbnail.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/thumbnail/gallery-1590999763786-1-thumbnail.jpeg"
                }
            },
            ....
        ]
    }
}

------------------------------------------------------------------------------------------------------

// example uploading single file
// result: uploaded single image with resizing
{
    "status": "success",
    "data": {
        "avatar": [
            {
                "originalname": "nicolas-horn-MTZTGvDsHFY-unsplash.jpg",
                "original": {
                    "filename": "profile-1590999720386-original.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/original/profile-1590999720386-original.jpeg"
                },
                "large": {
                    "filename": "profile-1590999720386-large.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/large/profile-1590999720386-large.jpeg"
                },
                "medium": {
                    "filename": "profile-1590999720386-medium.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/medium/profile-1590999720386-medium.jpeg"
                },
                "thumbnail": {
                    "filename": "profile-1590999720386-thumbnail.jpeg",
                    "path": "http://127.0.0.1:8000/uploads/2020/06/thumbnail/profile-1590999720386-thumbnail.jpeg"
                }
            }
        ]
    }
}


// example uploading multer fields
// result: uploaded image with grouping by field and resizing
{
    "status": "success",
    "cover": [
        {
            "originalname": "screencapture-cart-2020-04-28-11_34_35.png",
            "original": {
                "filename": "cover-1592806057900-0-original.png",
                "path": "http://127.0.0.1:8000/uploads/2020/06/original/cover-1592806057900-0-original.png"
            },
            "large": {
                "filename": "cover-1592806057900-0-large.png",
                "path": "http://127.0.0.1:8000/uploads/2020/06/large/cover-1592806057900-0-large.png"
            },
            "medium": {
                "filename": "cover-1592806057900-0-medium.png",
                "path": "http://127.0.0.1:8000/uploads/2020/06/medium/cover-1592806057900-0-medium.png"
            },
            "thumbnail": {
                "filename": "cover-1592806057900-0-thumbnail.png",
                "path": "http://127.0.0.1:8000/uploads/2020/06/thumbnail/cover-1592806057900-0-thumbnail.png"
            }
        },
        ....
    ],
    "gallery": [
        {
            "originalname": "andre-hunter-p-I9wV811qk-unsplash.jpg",
            "original": {
                "filename": "gallery-1592806057900-0-original.jpeg",
                "path": "http://127.0.0.1:8000/uploads/2020/06/original/gallery-1592806057900-0-original.jpeg"
            },
            "large": {
                "filename": "gallery-1592806057900-0-large.jpeg",
                "path": "http://127.0.0.1:8000/uploads/2020/06/large/gallery-1592806057900-0-large.jpeg"
            },
            "medium": {
                "filename": "gallery-1592806057900-0-medium.jpeg",
                "path": "http://127.0.0.1:8000/uploads/2020/06/medium/gallery-1592806057900-0-medium.jpeg"
            },
            "thumbnail": {
                "filename": "gallery-1592806057900-0-thumbnail.jpeg",
                "path": "http://127.0.0.1:8000/uploads/2020/06/thumbnail/gallery-1592806057900-0-thumbnail.jpeg"
            }
        },
        ....
    ]
}

Params

/**
 * Constructor method
 * @param  {object} req
 * @param  {string || object} filename
 * @param  {array} sizes
 * @param  {string} uploadPath
 * @param  {string} fileUrl
 * @param  {Object} sharpOptions
 */
const resizeObj = new MulterSharpResizer(
  req,
  filename,
  sizes,
  uploadPath,
  fileUrl,
  sharpOptions
);
paramrole
reqExpress request object
filenameString for array/single and Object{ } for multer fields Set custom filename for storage
sizesArray of objects sizes for storage image with multiple sizes
uploadPathSet custom path for storage uploaded files
fileUrlSet url for access files with url(link)
sharpOptionsDefault: { } , Also you can use any sharp options from sharp.js doc

Sizing structure

const sizes = [
  {
    path: "original",
    width: null,
    height: null,
  },
  {
    path: "large",
    width: 800,
    height: 800,
  },
  {
    path: "medium",
    width: 300,
    height: 300,
  },
  {
    path: "thumbnail",
    width: 100,
    height: 100,
  },
];
propertyvalue
pathSet any name of directory and suffix for storage file after uploaded
widthSet width for resizing
heightSet height for resizing

If set width: null and height: null , The original size is saved by default

License

MIT

resizenode.jssharp.jsmulter.jsresize image with node.js, multer.js and sharp.js
fs-extrasharp
@infinitebrahmanuniverse/nolb-multe@everything-registry/sub-chunk-2217
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