This guide will walk you through setting up Pinata with Astro

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Create an API Key and get Gateway URL

To create an API key, visit the Keys Page and click the “New Key” button in the top right. Once you do that you can select if you want your key to be admin or if you want to scope the privileges of the keys to certain endpoints or limit the number of uses. Make those selections, then give the key a name at the bottom, and click create key.
If you are just getting started we recommend using Admin privileges, then move to scope keys as you better understand your needs
Once you have created the keys you will be shown your API Key Info. This will contain your Api Key, API Secret, and your JWT. Click “Copy All” and save them somewhere safe!
The API keys are only shown once, be sure to copy them somewhere safe!
After you have your API key, you will want to get your Gateway domain. When you create a Pinata account, you’ll automatically have a Gateway created for you! To see it, simply visit the Gateways Page see it listed there. The gateway domains are randomly generated and might look something like this: 
aquamarine-casual-tarantula-177.mypinata.cloud

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Setup Astro

To create a new Astro project go ahead and run this command in the terminal: 
npm create astro@latest pinata-astro
You can select which options you prefer, but for this exmaple we’ll use the following: 
tmpl   How would you like to start your new project?
       Empty

  ts   Do you plan to write TypeScript?
       Yes

 use   How strict should TypeScript be?
       Strict

deps   Install dependencies?
       Yes

 git   Initialize a new git repository?
       Yes
After completing the project setup we can go ahead and cd into the repo and install pinata. 
cd pinata-astro && npm i pinata
Since we want to keep our API key private we will need to make sure our code is deployed server side, and we can use several different adapter options which you can view here. We also need a UI framework to handle our upload form, and there are many to choose from here. We’ll use vercel and svelte for this tutorial, and you can install them like so. 
npx astro add vercel svelte
This should install the dependencies and alter the astro.config.mjs for us.

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Setup Pinata

In the src folder make a new folder called utils, and inside there make a file called pinata.ts with the following contents:
src/utils/pinata.ts
import { PinataSDK } from "pinata";

export const pinata = new PinataSDK({
	pinataJwt: import.meta.env.PINATA_JWT,
	pinataGateway: import.meta.env.GATEWAY_URL,
});
This will create and export an instance of the Files SDK using environment variables, and to set those up make a new file at the root of the project called .env with the following values: 
PINATA_JWT= # The Pinata JWT API key we got earlier
GATEWAY_URL= # The Gateway domain we grabbed earlier, formatting just as we copied it from the app

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Create Client Side Form

In the src folder make another folder called components, then inside there make file called UploadForm.svelte.
src/components/UploadForm.svelte
<script lang="ts">
let url: string;
let isUploading: boolean;

async function submit(e: SubmitEvent) {
	isUploading = true;
	e.preventDefault();
	const formData = new FormData(e.currentTarget as HTMLFormElement);
	const request = await fetch("/api/upload", {
		method: "POST",
		body: formData,
	});
	const response = await request.json();
	url = response.data;
	isUploading = false;
}
</script>

<style>
  img {
    max-width: 500px;
  }
  form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
  }
  button {
   background-color: #6E57FF;
   color: white;
   border: none;
   border-radius: 5px;
   padding: 0.75rem 1.5rem;
   font-weight: bold;
  }
</style>

<form on:submit={submit}>
  <input type="file" id="file" name="file" required />
  <button>{isUploading ? "Uploading..." : "Upload"}</button>
  {#if url}
    <img src={url} alt="pinnie" />
  {/if}
</form>
This component creates a <form> with a file <input> as well as a <button> to send it. The form will trigger the submit function, which takes our form data and makes an API request to our server side code. Once complete the API will send response with a url that we can use in the <img> tag to display it on the page.

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Server Side API Route

In the src/pages folder make a new folder called api and inside there make a file called upload.ts. Paste the following code inside it: 
import type { APIRoute } from "astro";
import { pinata } from "../../utils/pinata";

export const POST: APIRoute = async ({ request }) => {
	const data = await request.formData();
	const file = data.get("file") as File;
	if (!file) {
		return new Response(
			JSON.stringify({
				message: "Missing file",
			}),
			{ status: 400 },
		);
	}
	const { cid } = await pinata.upload.public.file(file);
	const url = await pinata.gateways.public.convert(cid)
	return new Response(
		JSON.stringify({
			data: url,
		}),
		{ status: 200 },
	);
};
This simple API route will parse the incoming formData and get the file we attached. If there isn’t a file attached we’ll send a error response. Otherwise we’ll upload the file using the SDK method pinata.upload.public.file and deconstruct the response to get the cid. With that cid we can use the convert method to create a URL, which we can then send back to the client.

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Add Component to the Page

The last step here is to update the src/pages/index.astro file with our new component!
src/pages/index.astro
---
import UploadForm from "../components/UploadForm.svelte";
---

<html lang="en">
	<head>
		<meta charset="utf-8" />
		<link rel="icon" type="image/svg+xml" href="/favicon.svg" />
		<meta name="viewport" content="width=device-width" />
		<meta name="generator" content={Astro.generator} />
		<title>Astro</title>
	</head>
	<body>
		<h1>Astro + Pinata</h1>
		<UploadForm client:load />
	</body>
</html>