12 JavaScript Image Manipulation Libraries for Your Next Web App

12 JavaScript Image Manipulation Libraries for Your Next Web App

images in node

Most frequently, this occurs in browser tabs which are no longer in the foreground, but could happen at any time. Note that unlike WebGL textures, FIM allows an operation to have a single image used as both an input and an output parameter. FIM automatically manages any temporary objects needed to make it work.

Note also that the mousedown event handler is prepped to receive the event object. This object holds data about the event, and jQuery always passes it to your event handler, whether or not it’s set up to receive it. That object will be crucial later on in ascertaining where the mouse was when the event fired.

It provides a unique https://traderoom.info/ model and interactive platform to work with Canvas. Fabric.js was designed to tackle the difficulties of using the Canvas API. With Fabric.js, you can work with both images and animations. For example, Fabric.js allows you to drag, scale, and rotate images.

process images

There are two available themes called light and dark, but you can create your own themes to match the color scheme of the website where you plan to integrate the editor. You can easily change the rotation of an image or flip it horizontally and vertically. The images can be easily cropped to some preset aspect ratios like banners, squares, etc. There is also an option to specify a custom width and height for the images.

Angular image editor

This can negatively impact the application load speed, and also waste your server space. With image processing, your application can resize and compress all the user-uploaded images, which can significantly improve your application performance and save your server disk space. Let’s move on to a JavaScript image manipulation library that is more inherently complicated. A strong Marvin Framework derivative called MarvinJ provides a wide range of methods for altering the color and appearance of the images.

To remove the black background, you pass an object as a second argument to make the background transparent. The area of the image that fits within the box will be extracted out and saved into sammy-cropped.png as a separate image. Inside the try block, you read an image, extract and log its metadata. When an error occurs during this process, execution skips to the catch section and logs the error preventing the program from crashing.

Image manipulation with Javascript and prototype

Over 9 Million Digital Assets Everything you need for your next creative project. Pintura is written in vanilla JavaScript and doesn’t require any third-party libraries to work. It provides components for fast and easy integration with all popular libraries and frameworks like jQuery, React, Angular, and Vue.

However, it is also possible to run the editor in headless mode and access all the features programmatically. The dx and dy parameters indicate the device coordinates within the context at which to paint the top left corner of the pixel data you wish to draw. This creates a new ImageData object with the specified dimensions. All pixels are preset to transparent black (all zeroes, i.e., rgba). Image-js was developed to be used in scientific applications where we often have to work on images that have more that 8 bits per channel.

Like CamanJS, Jimp can be used both in NodeJS and in the browser. It doesn’t use HTML elements , but reads in the image to process from a path or a url. Note that operations that involve changing the orientation or the size of the image are not provided by grafi.js.

Complex Image Processing Operations via JavaScript API

javascript image manipulation also that we get the left and top coordinates via jQuery’s offset() method. However, since we appended our drag box directly to the body, all of these three techniques would work the same in our case. Equally, we get the width and height via the width() and height() methods, rather than via css(‘width/height’), as the former omits ‘px’ from the returned values. Since our PHP script will be using these coordinates in a mathematical fashion, this is the more suitable option. Whilst this article doesn’t concern itself deeply with security, this is a simple precaution. Sure, there are plugins out there that you can use to do this; but this article aims to show you what’s behind the process.

You won’t see it yet, as it’s got width and height zero; only when we start dragging should it become visible, but if you use Firebug or Dragonfly to inspect it, you will see it in the DOM. A quick word about the technologies you’ll need to work through this article. You’ll need a PHP test server running the GD library, either on your hosting or, if working locally, through something like XAMPP. GD has come bundled with PHP as standard for some time, but you can confirm this by running the phpinfo() function and verifying that it’s available on your server.

Compressor.js’s whole schtick is in the name – it handles the image compression and does it well. All thanks to the canvas.toBlob API that allows you to set the compression output quality of the image in the range from 0 to 1. Simple & easy to use image manipulation module for beginners.

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Passing it 4 will apply a gaussian blur with a sigma value of 4. After the image is blurred, you define a path to save the blurred image. In this step, you’ll rotate the sammy.png image at a 33 degrees angle. A gaussian blur is a technique of blurring an image using the Gaussian function, which reduces the noise level and detail on an image. You will receive no output, but an image file sammy-resized-compressed.jpeg is saved in your project directory.

We have covered the basics of image manipulation, text generation, and loading from a remote source. Merge Images is a standout entry on this list because it doesn’t crop, skew, or rotate the photos. We assume you already know what this one does; it combines the provided pictures onto a single canvas, eliminating the need for you to convert them into code and work on a canvas . The FIM library provides fast, 2D image manipulation in web browsers and Node.js using WebGL. // rotate the image counter-clockwise by a number of degrees.

# Manipulating images

Lena.js is extremely compact and has a fantastic function that lets you add your own filters because its source code is available on GitHub. Remember to check that every image in your app looks fantastic before adding it. You have the option of performing the necessary adjustments yourself or hiring a reputable image-manipulation service. The image data could be loaded from a Uint8Array of RGBA values using the FimImage.loadPixelDataAsync() method. The Fim.createImageFromPngFileAsync() and Fim.createImageFromJpegFileAsync() methods are also useful for instantiating images directly from an existing PNG or JPEG file.

For more details on the available image effects and filters, see Visual image effects and enhancements. For more information on image transformations, see Apply common image transformations. Generate and persist optimised and responsive breakpoint images on the fly in your AdonisJS application. It sends attachments of image manipulation, Anime, nsfw, and more pictures easily without any APIs. For more information on the distinction between all these methods, see my previous article on SmashingMag, Commonly Confused Bits of jQuery. Note the condition on the second line, which guards against simple, dragless clicks to the image being interpreted as crop attempts.

This should let you drag an image into the image box which will then be read by javascript, analyzed, and plotted — all in the browser. It’s just a test-of-concept and comes with a few caveats, most of which are explained on the page. It probably doesn’t work in Internet Explorer prior to version 10, but should work pretty well in the latest versions of Chrome, Firefox, and Safari. It also doesn’t included much feedback like a progress bar during the processing of the file, so if you’re on a slower machine there may be a short pause as it works. The notes mention that because the images are first processed by the browser, they are converted to sRGB before we can analyze the color. There are some libraries out there like jpgjs that might make it easier.

This will create an illusion of sammy swimming deep in the ocean. To composite the images, you’ll chain the composite() method to the sharp instance. Within the resizeImage() function, you use the toFormat() method of the sharp module to change the image format and compress it. The first argument of the toFormat() method is a string containing the image format you want to convert your image to.

  • For example, the lens blur effect looks great only if there are some bright point light sources in the image.
  • Image-js was developed to be used in scientific applications where we often have to work on images that have more that 8 bits per channel.
  • By all means, tell me about better ways, but I am trying to see if this would work as a library.
  • Starting with just HTML and CSS, I kept moving forward and gained experience in PHP, JavaScript, and Python.
  • After you finish editing your photo, you can download it or even email it to an email of your choosing.
  • Browser-based tools that take advantage of HTML5 and new javascript APIs are becoming more advanced.

As you can see, the mousemove event handler exits if it discovers that the mouse button is not currently down, as we decided above it should be. And in similar fashion, let’s listen to the final mouseup event. Since we made a point above of including it into our HTML page, we can rest assured that when it’s called into action, it will be present in the environment. One of the numerous advantages brought about by the explosion of jQuery and other JavaScript libraries is the ease with which you can create interactive tools for your site. When combined with server-side technologies such as PHP, this puts a serious amount of power at your finger tips.


The rotateImage() function is an asynchronous function that reads an image and will return the image rotated to an angle of 33 degrees. Within the function, the rotate() method of the sharp module takes two arguments. By default, sharp makes the background of the rotated image black.