Show HN: SlideBySide – Present slides without sharing your screen

SlideBySide is a free, browser-based presentation tool that allows presenters to share PDF or PowerPoint slides without screen sharing, featuring live cursors, shared drawing tools, and synchronized slide navigation for all participants. The platform requires no sign-up or installation, supports multiple permission levels, and integrates with Google Drive and OneDrive for easy deck importing. Viewers can follow along together, browse independently, or present in full-screen mode while maintaining privacy controls over who can edit, draw, or download content.