# Missing `width` in the URL Returned by the Loader Prop on `next/image` #### Why This Error Occurred The [`loader`](https://nextjs.org/docs/api-reference/next/image#loader) prop on the `next/image` component allows you to override the built-in URL resolution with a custom implementation in order to support any 3rd party cloud provider that can perform Image Optimization. This error occurred because the provided `loader()` function did not use `width` in the returned URL string. This means that the image will likely not be resized and therefore degrade performance. #### Possible Ways to Fix It - Ensure your Image Optimization provider can resize images. Then use the `width` parameter from the [`loader()`](https://nextjs.org/docs/api-reference/next/image#loader) function to construct the correct URL string. - Add the [`unoptimized`](https://nextjs.org/docs/api-reference/next/image#unoptimized) prop. ### Useful Links - [Image Optimization Documentation](https://nextjs.org/docs/basic-features/image-optimization) - [`next/image` Documentation](https://nextjs.org/docs/api-reference/next/image)