Single Page Applications (SPAs)

A single-page application (SPA) is a Web app that is presented to the user through a single HTML page to be more responsive and to more closely replicate a desktop application or a native app. An SPA is sometimes referred to as a single-page interface (SPI).


Single page applications (SPAs) are everywhere. Even if you're not exactly sure what they are, you most likely use them regularly — they're a great tool for making incredibly engaging and unique experiences for website users.

A single page application is a website or web application that dynamically rewrites a current web page with new data from the web server, instead of the default method of a web browser loading entire new pages.

You'll easily recognize some popular examples of single page applications like Gmail, Google Maps, Airbnb, Netflix, Pinterest, Paypal, and many more.

High speed, ease, and effectiveness. Concerning SPAs, it loads the majority of app resources (HTML/CSS/Scripts) only once. Single-page app doesn't need to reload a whole page but only a specific piece of data that users needs.

You click a link, your web browser sends the request to the server, and the server sends back some HTML. Every response back from the server is the full HTML document required to render a web page. A single-page app breaks this paradigm. The web browser sends the initial request and still gets back some HTML.

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