An "Uploader" is a person or software that transfers files from a local device to a remote server or platform, such as a website or cloud storage. This process allows users to share documents, images, videos, and other types of data with others over the internet. Uploaders play a crucial role in various online activities, including social media, file sharing, and content creation. For example, when someone posts a photo on Instagram or shares a video on YouTube, they are acting as an uploader, making their content accessible to a wider audience.