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To upload multiple photos, select the images you want to share from your device. If you’re using a computer, photo enhancement serviceshold down the Ctrl (Windows) or Command (Mac) key while clicking each photo. For mobile devices, tap and hold on the first photo, then select the others. Click the upload button, and all selected photos will be uploaded together, simplifying the process.

Hi,

Thanks for your suggestion. We will consider adding this feature in a future update.
In the meantime, you can check Dropzone Docs & Examples.

Regards.