When uploading an image to Cloudinary, it is stored as is in your account.
Here's an uploaded image with no transformations:
The original file's size is ~200KB, therefore clicking its link (http://res.cloudinary.com/demo/image/upload/couple.jpg) will deliver the original ~200KB file as is.
However, some base optimizations are automatically performed by Cloudinary when even a single transformation is included.
For example, the following link delivers a ~40KB version of the same image, even when setting the dimensions of the image to the exact same as before with
If you'd like to optimize an image upon uploading it to your account, you can apply any incoming transformation so that the optimized version is saved as the original version (e.g., using
a_exif to automatically rotate the image according to its EXIF data). For more information about incoming transformations, you can refer to our documentation on performing transformations upon upload.
If you'd like to optimize your images further, you can refer to our documentation on image optimization, and in particular consider the use of
q_auto in your delivery URLs to automatically deliver the optimal format and quality level for your images.