What does Async mean?
Async is short for “asynchronous,” async means that the web browser doesn’t have to wait for a task to finish before moving onto the next one while assembling your web page.
Explain “Async” Like I’m Five Years Old
Resources are everything on a web page, like images, text (HTML), and cascading style sheets (CSS).
To see the web page as it was designed, and use all the features and functions, users need to download all the resources.
In the past, every resource downloaded one at a time. But that’s not how it works anymore.
Nowadays, businesses need to do well with SEO to be successful in the online world. In other words, they need to give customers a good experience on their websites so they will rank high on search engine result pages.
One of the main aspects of giving customers a good experience is making sure websites load quickly.
This is where asynchronous resources come in.
Each page can have different amounts of resources. The more resources there are on a web page, the slower it will load.
One technique to speed up the loading process is by using asynchronous resource loading.
Each page on a website can have different amounts of resources. The more resources a page has, the slower it will load.
There is a technique called asynchronous resource loading that can help make pages load faster.
This means loading every resource individually.
This will help users see and use the page faster.
But remember that users are not the only ones who browse your website – bots also do this job.
Bots, also known as web crawlers, are responsible for analyzing your website and deciding if it is well optimized.
They have a massive impact on your website ranking.