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Showing content from https://cloudinary.com/documentation/react1_integration below:

React (Legacy) - Image and Video Transformations and Delivery

This is the

version of the React SDK (

v1.x).

For details on migrating to the current version of the SDK (frontend-frameworks v1.x + js-url-gen v1.x), see the React SDK migration guide.

Cloudinary's React SDK provides simple, yet comprehensive image and video upload, transformation, optimization, and delivery capabilities that you can implement using code that integrates seamlessly with your existing React application.

Take a look at the following transformation code and the image it delivers:

This relatively simple code performs all of the following on the original front_face.jpg image before delivering it:

• Crop to a 150x150 thumbnail using face-detection gravity to automatically determine the location for the crop
• Round the corners with a 20 pixel radius
• Apply a sepia effect
• Overlay the Cloudinary logo on the southeast corner of the image (with a slight offset). The logo is scaled down to a 50 pixel width, with increased brightness and partial transparency (opacity = 60%)
• Rotate the resulting image (including the overlay) by 10 degrees
• Convert and deliver the image in PNG format (the originally uploaded image was a JPG)

And here's the URL that would be included in the image tag that's automatically generated from the above code:

In a similar way, you can transform a video.

• Build URLs for image and video transformation
• Helper elements for embedding and transforming images, and more

The Cloudinary React SDK serves as a layer on top of Cloudinary's JavaScript (cloudinary-core) library. Install the SDKs by running the following command:

The following 4 elements are available:

• CloudinaryContext - allows you to define shared parameters that are applied to all child elements.
• Image - defines a Cloudinary Image tag.
• Video - defines a Cloudinary Video tag.
• Transformation - allows you to define additional transformations on the parent element.

To use the Cloudinary React elements, you must configure at least your Cloudinary product environment cloudName. You can additionally define a number of optional configuration parameters if relevant. You can find your product environment configuration credentials in the API Keys page of the Cloudinary Console Settings. You can apply these settings directly to each element, or you can apply them to all child elements using a CloudinaryContext element.

• Most functionality implemented on the client side does not require authentication, so only your cloud_name is required to be configured, and not your API key or secret. Your API secret should never be exposed on the client side, so if you want to use signed uploads or generate delivery signatures, you'll also need server-side code, for which you can use one of our backend SDKs.
• For backward compatibility reasons, the default value of the optional secure configuration parameter is false. However, for most modern applications, it's recommended to configure the secure parameter to true to ensure that your transformation URLs are always generated as HTTPS.

For example:

• Configuration directly in the element:

• Configuration with CloudinaryContext applies to all child elements:

The JavaScript cloudinary-core (legacy) library is the foundation library underlying Cloudinary's React SDK. You can access any of the core JavaScript functionality within your React code after importing the core library. For example:

When using the React SDK, keep these guidelines in mind:

• Parameter names: camelCase. For example: publicId
• Classes: PascalCase. For example: ImageTag
• Methods: camelCase. For example: toHTML
• Pass parameter data as: Object

See our React Photo Album sample project that includes code for uploading files, deleting files, and using dynamic lists: https://github.com/cloudinary/cloudinary-react/tree/master/samples/photo_album

You can try out Cloudinary components quickly and easily with our React SDK Storybook, which provides you with a rich visual interface, code playground and inline documentation.

To start using the storybook, select a component from the left-hand menu. Depending on which component you choose, you can either display an asset from your own Cloudinary product environment, experiment by changing parameters, and view the results, or you can scroll and view many different examples of implementations enabled by your selected Cloudinary component.

Either way, when you've found your desired effect, you can copy the code to conveniently implement the results.

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