Remix on AWS with SST

Create and deploy a Remix app to AWS with SST.

We are going to create a Remix app, add an S3 Bucket for file uploads, and deploy it to AWS using SST.

Before you get started:

1. Create a project

Let’s start by creating our project.

npx create-remix@latest
cd aws-remix

Init SST

Now let’s initialize SST in our app. Make sure you have the CLI installed.

sst init

This’ll detect that you are in a Remix project and create a sst.config.ts file in the root.

Start dev mode

Start the dev mode for your Remix app and link it to SST.

npm run dev

2. Add an S3 Bucket

Let’s add a public S3 Bucket for file uploads. Update your sst.config.ts.

const bucket = new sst.aws.Bucket("MyBucket", {
  public: true
});

Link the bucket

Now, link the bucket to our Remix app.

new sst.aws.Remix("MyWeb", {
  link: [bucket],
});

3. Create an upload form

Add the upload form client in app/routes/_index.tsx. Replace the Index component with:

export default function Index() {
  const data = useLoaderData<typeof loader>();
  return (
    <div style={{ fontFamily: "system-ui, sans-serif", lineHeight: "1.8" }}>
      <h1>Welcome to Remix</h1>
      <form
        onSubmit={async (e) => {
          e.preventDefault();

          const file = (e.target as HTMLFormElement).file.files?.[0]!;

          const image = await fetch(data.url, {
            body: file,
            method: "PUT",
            headers: {
              "Content-Type": file.type,
              "Content-Disposition": `attachment; filename="${file.name}"`,
            },
          });

          window.location.href = image.url.split("?")[0];
        }}
      >
        <input name="file" type="file" accept="image/png, image/jpeg" />
        <button type="submit">Upload</button>
      </form>
    </div>
  );
}

4. Generate a pre-signed URL

When our app loads, we’ll generate a pre-signed URL for the file upload and use it in the form.

export async function loader() {
  const command = new PutObjectCommand({
    Key: crypto.randomUUID(),
    Bucket: Resource.MyBucket.name,
  });
  const url = await getSignedUrl(new S3Client({}), command);

  return json({ url });
}

Add the relevant imports.

import { Resource } from "sst";
import { json } from "@remix-run/node";
import { useLoaderData } from "@remix-run/react";
import { getSignedUrl } from "@aws-sdk/s3-request-presigner";
import { S3Client, PutObjectCommand } from "@aws-sdk/client-s3";

And install the npm packages.

npm install @aws-sdk/client-s3 @aws-sdk/s3-request-presigner

Head over to the local Remix app in your browser, http://localhost:5173 and try uploading an image. You should see it upload and then download the image.

5. Deploy your app

Now let’s deploy your app to AWS.

sst deploy

Congrats! Your site should now be live!

SST Remix app

Connect the console

As a next step, you can manage your app and view issues in the SST Console.

Issues in Remix app in SST Console

You can create a free account and connect it to your AWS account.