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Integrating Cloudinary with Svelte and SvelteKit

svetle and svetlekit

Svelte is a JavaScript-based web framework that gives developers powerful tools for building performance-first web applications. SvelteKit is a metaframework built by the Svelte team bringing full-stack functionality to Svelte serving as the recommended way to build applications with Svelte.

Adding Cloudinary to Svelte and SvelteKit apps is an easy way to complement Svelte with automatic optimization, media management like uploading, and transformations for building great experiences for the web.

Using Cloudinary with Svelte

There are several options for easily integrating Cloudinary with your Svelte or SvelteKit app.

Svelte Cloudinary

Svelte Cloudinary is a community-built solution for using Cloudinary in a Svelte project. It currently includes the CldImage component which allows you to easily drop your Cloudinary assets into an app with automatic optimization.

> Important: Community-developed libraries are developed, tested and maintained by the community. Bug fixes and feature requests should be submitted in the relevant repository.

The CldImage component wraps the Unpic Svelte Image component, giving a core set of image loading standards, extending it with the power of Cloudinary tech.

This includes features beyond automatic optimization like dynamic cropping and resizing, background removal, and image and text overlays.

For basic usage, first install the package with:

npm install svelte-cloudinary

Add your Cloudinary environment variables in `.env.local`:

VITE_PUBLIC_CLOUDINARY_CLOUD_NAME="<Your Cloud Name>"

And use the component in your project:

import { CldImage } from svelte-cloudinary';
<CldImage
  width="600"
  height="600"
  src="<Public ID>"
  alt=”<Description>”
/>

Learn more about all of the features at: https://svelte.cloudinary.dev/

Building Image & Video URLs with the Cloudinary JavaScript SDK

The JS URL Gen SDK allows developers to integrate with Cloudinary in any JavaScript-based applications.

You can use the JavaScript SDK to generate image and video URLs along with any transformations you want.

To get started, first install the JavaScript SDK with:

npm install @cloudinary/url-gen

Set up a new instance of Cloudinary with your cloud’s configuration:

import { Cloudinary } from '@cloudinary/url-gen';
const cld = new Cloudinary({
  cloud: {
    cloudName: '<Your Cloud Name>'
  }
}); 

Then use one of the available methods to generate your asset URL such as:

const myImage = cld.image('<Public ID>').format('auto').quality('auto').toURL().

Which will build an image URL that will use automatic optimization.

Learn more over on the Cloudinary Docs.

Uploading & Managing Media Assets with the Cloudinary Node.js SDK

When working in a SvelteKit application, you gain access to tools like Form Actions that allow you to work in a Node.js environment.

Inside Node, you can take advantage of the Cloudinary Node.js SDK to upload files and interact with other Cloudinary APIs like search and administration.

To get started, first install the Cloudinary Node.js SDK:

npm install cloudinary

Configure the package and your Cloudinary account:

const cloudinary = require('cloudinary').v2;
# or
import { v2 as cloudinary } from 'cloudinary';
cloudinary.config({
  cloud_name: '<Your Cloud Name>',
  api_key: '<Your API Key>', // Store in .env.local
  api_secret: '<Your API Secret'>, // Store in .env.local
  secure: true
});
const result = await cloudinary.uploader.upload('/path/to/image');

> Note: Avoid storing your credentials directly in the code to avoid compromising your account. Use environment variables instead to securely use your API key, API secret, and optionally your Cloud Name within your application.

Learn more over on the Cloudinary Docs.

More Resources

Learn more about how to use Cloudinary with Svelte:

QUICK TIPS
Colby Fayock
Cloudinary Logo Colby Fayock

In my experience, here are tips that can help you better integrate Cloudinary with Svelte and SvelteKit:

  1. Use svelte-cloudinary for streamlined image handling
    The svelte-cloudinary package provides a simplified way to integrate Cloudinary with Svelte projects. Use the CldImage component for easily embedding Cloudinary images with automatic optimization and transformation features like cropping, resizing, and overlays. This is particularly useful for developers who prefer a component-based approach.
  2. Leverage environment variables for secure configuration
    Always store your Cloudinary credentials (cloud name, API key, and API secret) in environment variables using .env.local. This ensures that sensitive information is not exposed in your codebase, maintaining security best practices.
  3. Integrate Cloudinary’s JS URL Gen SDK for dynamic asset URLs
    Use the @cloudinary/url-gen JavaScript SDK to generate image and video URLs dynamically within your Svelte components. This allows you to apply transformations like format auto-selection, quality adjustments, and more, directly in your application logic.
  4. Optimize images with URL-based transformations
    Take full advantage of Cloudinary’s URL-based transformation features when integrating with Svelte. This enables you to perform on-the-fly optimizations like adjusting image size, applying filters, or converting formats without needing to pre-generate multiple versions.
  5. Utilize SvelteKit’s server-side capabilities with Cloudinary’s Node.js SDK
    In SvelteKit, you can use server-side tools like Form Actions to handle file uploads and media management. Integrate the Cloudinary Node.js SDK to upload images, manage assets, and interact with Cloudinary’s API directly from your SvelteKit backend.
  6. Use Cloudinary for responsive images
    Implement responsive image techniques with Cloudinary by generating different image sizes and using the srcset attribute in combination with CldImage. This ensures that your application serves the most appropriate image size for each user’s device and screen resolution.
  7. Experiment with advanced Cloudinary features like overlays and background removal
    With svelte-cloudinary and the JS URL Gen SDK, you can easily implement advanced Cloudinary features such as adding text overlays, removing backgrounds, or applying artistic effects. These features can enhance user engagement by creating visually compelling content.
  8. Integrate Cloudinary with SvelteKit’s API routes for customized media handling
    Use SvelteKit’s API routes to create custom endpoints that interact with Cloudinary. For example, you can build an API route that uploads images, fetches optimized media, or manages assets dynamically based on user input or other application logic.
  9. Optimize video content with Cloudinary in Svelte
    Beyond images, use Cloudinary to manage and deliver video content in your Svelte application. Use the JavaScript SDK to apply transformations such as trimming, watermarking, and format conversion, ensuring optimal delivery based on user bandwidth and device capabilities.
  10. Use Cloudinary for real-time media management in CMS-powered Svelte apps
    If you’re integrating Svelte or SvelteKit with a headless CMS, use Cloudinary for real-time media management. This allows content editors to upload and optimize media assets directly within the CMS, with Cloudinary handling delivery and transformations seamlessly within the Svelte app.
Last updated: Aug 24, 2024