React — async image loading

Hi there! 👋 😊

Did you know that if you load images after the page is loaded, the user will see the content earlier and SEO tools will detect that the page loads faster? 🚀📈

Before we start, I would highly recommend you to check out runnable example for the solution on our website:
React — async image loading

In this article, I want to show you how to create a simple component in React by which the graphics are loaded after all resources are loaded.

That approach speeds up page loading by splitting the loading process into two steps:

• page loading (without async images) — we see all necessary things in the right order sooner,
• async images loading — images are loaded when the page is ready.

Final effect:

Images async loading proof in Google Chrome DevTools — loaded after blue and red lines

Arrows mark lines when images are loaded after rendering the page (when it’s ready).

Below I present you a solution in which I create an in-memory only image that, after is loaded, signals to display the proper image in React on the web page.

Practical example:

I recommend copying the solution to your local React project, open developer tools in your browser and then run the application to see the result.

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See you in the next posts! 🖐

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