EEG Viewer Online

The EEG Viewer Online ingests standard EEG data formats (EDF/BDF) and renders time-domain waveforms for selected channels over user-specified time windows. It provides basic statistics and optional spectral estimates to aid quick assessment and comparison across channels or sessions. Conceptually, data is parsed from the file header to map channel names to data streams, then plotted with consistent time axes and microvolt scaling. Beneficiaries include clinicians performing routine checks, researchers validating data quality, and students learning EEG patterns. The tool’s unique value lies in combining accessible visualization with core analytics in a browser, eliminating the need for local software installation and enabling easy sharing of results. Core features include data ingestion, multi-channel waveform rendering, channel and time-window selection, and export options. Optional features such as PSD estimates and artifact indicators extend quick insight without deep processing. Use cases range from post-recording quality assessment to teaching demonstrations and collaborative review of EEG sessions.