Create a signed upload URL for a file upload. This method is ideal when you want to authorize server side but upload on the client; check out this doc for more details.
All the information about the upload such as the name, group, keyvalues, etc. must be part of the signed URL in order for those values to go through. If you have a basic signed URL with no extra parameters and then try to add fields like name, group, etc. they will not go through.

​
Usage

import { PinataSDK } from "pinata";

const pinata = new PinataSDK({
  pinataJwt: process.env.PINATA_JWT!,
  pinataGateway: "example-gateway.mypinata.cloud",
});

const signedURL = await pinata.upload.public
  .createSignedURL({
    expires: 30
  });

const upload = await pinata.upload.public
  .file(file)
  .url(signedURL)

​
Returns

  • Type: string
The full signed URL 
https://uploads.pinata.cloud/v3/files/209bb44c-e987-47c4-a9e3-a88e02d4d8e9?X-Algorithm=PINATA2&X-Date=1734379351&X-Expires=300&X-Method=%5B%22HEAD%22%2C%22PATCH%22%2C%22POST%22%5D&X-User-ID=eb73db21-10fa-4005-b97c-639e19e82d60&X-Signature=<SIGNATURE>

​
Parameters

​
expires

  • Type: number
The number of seconds the signed URL should be valid for 
const url = await pinata.upload.public.createSignedURL({
	expires: 30,
});

​
name (Optional)

  • Type: string
Name for the file to be uploaded 
const url = await pinata.upload.public.createSignedURL({
	expires: 30,
	name: "My Cool File"
});

​
mimeTypes (Optional)

  • Type: string[]
Specify allowed file mime types and prevent uploads from files that do not match. Accepts wildcard mime types as well. 
const url = await pinata.upload.public.createSignedURL({
	expires: 30,
	mimeTypes: [
	  "image/*",
		"application/json"
	]
});

​
maxFileSize (Optional)

  • Type: number
Restrict upload to a specified file size in bytes 
const url = await pinata.upload.public.createSignedURL({
	expires: 30,
	maxFileSize: 50000 // 50kb
});

​
groupId (Optional)

  • Type: string
The target groupId the file would be uploaded to 
const url = await pinata.upload.public.createSignedURL({
	expires: 30,
	groupId: "ad4bc3bf-8794-49e7-94ff-fea1ce745779"
});

​
keyvalues (Optional)

  • Type: Record<string, string>
Keyvalue pairs for the uploaded file 
const url = await pinata.upload.public.createSignedURL({
	expires: 30,
	keyvalues: {
	  env: "prod"
	}
});

​
date (Optional)

  • Type: number
A UNIX timestamp of the date a URL is signed 
const date = Math.floor(new Date().getTime() / 1000);
//date: 1724943711

const url = await pinata.upload.public.createSignedURL({
	expires: 30,
	date: date
});