![]() What changes is the format of the source field. You can manually set the CORS headers in Next.js thanks to the headers key in : // Īs you can see, the headers key has a similar syntax to the equivalent one in. ![]() Here, you will explore three methods for using CORS in Next.js. There are many ways to achieve that in Next.js. The most common approach to CORS is to set it up globally on all API endpoints. The proposed solutions will work in both scenarios.įrom now on, we will assume that all API routes in your Next.js project are under the /api path. To follow this tutorial, it does not matter if your project is based on the Pages Router or the new App Router. If your Next.js application is older than the recommended version, you can upgrade it by following the official migration guide. Let’s now learn how to configure CORS in Next.js! Prerequisites for learning to configure CORS in Next.jsīefore moving to the next section, be sure to meet the prerequisites below: Applications hosted on the trusted domains will then be able to make requests to your Next.js API routes. This way, you can explicitly allow cross-origin requests for specific origins. To avoid that issue, you need to enable CORS by configuring the appropriate headers on the Next.js server. For example, if you had an application hosted on a different domain that needed to access those APIs in the frontend, it would be blocked by those cross-origin restrictions. However, there are scenarios where you may want to access those endpoints from other origins. This means they can only be accessed in the browser by pages within the same domain. As mentioned earlier, APIs in Next.js do not involve CORS headers by default, following a same-origin policy instead. Next.js has supported API development since v9.4. If you want to change that, you must configure it manually. By default, Next.js relies on a same-origin approach, imposing a strict policy.
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