What is an Image Manipulation Library
Let’s start with a simple description. An image manipulation library or IML is a tool that’s main goal is to help you systemize, organize and manipulate graphic elements of your app in different ways. Different image manipulation libraries typically serve different purposes and can perform such goals as cropping the images, resizing them, converting them from one format to another, improving their quality and many-many more. So, all and all, a tool to use when making a web app. Unless, of course, you want to make a dull monochrome app that contains no images whatsoever, which is an unrealistic scenario in a modern world, where design can make or break an app just as easily as its functionality or usability.
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The practical usage of some of the entries you are going to see in this article in a short time is a thing of beauty and will do nothing less than improve the development of your next web app by easing the work with the images. So, without any further delays, let’s get down to the list.
Pica is a prime tool for in-browser image resizing, most useful when you want to reduce an exceedingly large image into a suitable one in order to save upload time. It avoids the pixelation of an image and works at a suitably fast pace. It serves a great amount of server resources on image processing and can reuse your images into thumbnails in the browser. What’s also great about Pica is the fact that it auto selects such technologies as web workers, webassembly, createImageBitmap, pure JS, etc. automatically, so there is no need for you to do it yourself.
Lena.js can be described as a very simple, yet nice and neat image redactor and processor. It has a number (22 to be precise) image filters that you can play around with to improve your image. Lena.js is very small in size and has a killer feature that allows you to add your own filters, as it’s code is open to anyone at GitHub.
Grade (not a big surprise) is another JS library on our list. Its main selling point is producing complementary gradients that are automatically generated based on 2 colours that are determined predominant in the selected images. Such an effect allows your site or app to seem more seamless. Grade is an easy to use plugin that will add an aura of visually pleasing aesthetic to your finished product, which is always nice for both you and the end user.
And now back to the simpler stuff. 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.
Does your next web app need such simple, yet if used correctly, shapes as rectangles, circles, triangles and other polygons? May it be so that it requires more complex shapes? If the answer is “Yes” to any or both of the questions then Fabric.js is your guy – it will not only create all these shapes for you, but also allow you to manipulate every aspect of it, such as sizes, positions and rotations of the objects. But wait, there is more: control all the attributes of the upper-mentioned objects: colours, level of transparency. level of depth position and so on.
- Doctrine ORM with PostgreSQL and MySQL support
- User Management with admin/user roles
- JWT based authorization
A unique entree of this list, as Merge Images doesn’t crop or skew or rotate the images. We hope, you’ve already guessed what this one does – it merges the given images onto one canvas, ridding you of the need to transform them into code and working on a canvas (pun intended).
Doka is a JIML which will provide you with a variety of image editing. It has a rich UI that warms your soul if needed. The support for React, Vue, Svelte, Angular, jQuery is also a nice and needed touch during the working upon the images. You will get around and understand this Library quite quickly.
Conclusions to have
Start with one, if you feel cautious, add more if you feel adventurous, as it may actually require some tinkering to work the way you want it to work.
That’s it for today. Thanks for reading this article and stay tuned for our new ones!