Slideshare is a website that allows users to upload and share slide presentations, PDFs, documents and more. It has over 16 million users. Users can publish, archive and disseminate presentations by uploading images or files to the site. Slideshare functions similarly to YouTube but is focused on sharing slide-based content. It allows storing and sharing large files without emailing them. Users can add tags, descriptions and search for presentations on Slideshare. However, the presentations are static without narration to explain them. File formats may also be altered during uploading.