agilebrazerzkidai.blogg.se - Png compressor node.js npm package

PNG COMPRESSOR NODE.JS NPM PACKAGE INSTALL
PNG COMPRESSOR NODE.JS NPM PACKAGE FULL

To follow this tutorial along - the reader should have the following.Ĭreate a project directory named image-processing. The imagemin-pngquant NPM package is a Node.js implementation of the pngquant compression library and is a plugin for the imagemin NPM package.

PNG COMPRESSOR NODE.JS NPM PACKAGE INSTALL

Getting started with Node.js and JIMP image processing Compress Multiple PNG Images & Place Them in a New Directory Install NPM Packages Before we can start writing our code, we need to install both the imagemin and imagemin-pngquant NPM package. Is it possible to create a PNG image from a pixel data array using Node.js I'd like to create a PNG image from an array of RGBA values, and then save it to a file.JIMP provides the functionality to crop, resize, blur, and add effects to images. In a Node.js application, Javascript Image Manipulation Program (or JIMP) makes it easier to manipulate images to achieve whatever design we want. Getting Started with Node.js and JIMP image processing Based on the original pngjs with the follow enhancements. pngjs Simple PNG encoder/decoder for Node.js with no dependencies. We can now install the Underscore package in the version we want. cnpm install pngjs SYNC missed versions from official npm registry. Install a Specific Version of an npm Package.

PNG COMPRESSOR NODE.JS NPM PACKAGE FULL

If these default configurations cannot meet your needs, other parameter configurations may be required.JIMP eliminates the boilerplate code required to resize images to a given dimension before storing or adding watermark to images for branding purposes. It runs a full Node.js environment and already has all of npm’s 1,000,000+ packages pre-installed, including int-compress-string with all npm packages installed.

jpeg format picture, correct the flip/rotation direction.

When the output picture size is larger than the source picture, the source picture will be returned as the output picture.Fill the png picture with a transparent color.When the size of the png image is greater than 2m, it will be converted into a jpeg format image by default.Generally, the output image format keeps the original image format.Output picture width/height maintains the source picture width/height.

The default configuration is based on 0.8 compression ratio.

However, the compressed image output in this way meets the following characteristics: You can only pass in the image object to be compressed, other parameters are optional, and the plug-in automatically completes the image compression processing according to the default parameters. You can also find the file in the dist directory after downloading and import it through script on the page: You can install dependencies through npm: npm install js-image-compressor -save-dev

Provide some common tool functions for image processing ( image2Canvas, canvas2Blob and canvas2DataUrl, etc.), and users can also customize the style features of image output (for example, grayscale processing, watermarking).

Read the EXIF information of jpeg format pictures, and correct the picture orientation.

By default, a transparent background color is added to the output image of png, and other formats are set to white to avoid "black screen".

You can limit the width and height of the output image to prevent accidents, such as excessive compression operations that cause the browser to crash.

A certain threshold can be set for the size of the converted image, so that the image converted to png format will not be too large under undesirable conditions, and at the same time larger than this threshold, it can be automatically converted to jpeg format for better compression.

While providing basic image compression functions, it also exposes related public methods of image processing, as well as border case processing: After compression, it is only 5kb, and the image can be compressed on the front-end page. Js-image-compressor is a javascript library that implements lightweight image compression.