What is a .EDF file?
EDF stores biological signals such as EEG and sleep recordings.
- Did you know
- EDF, created in 1992, is the standard format for sleep and brain-signal recordings.
- EDF grew out of a collaboration begun by sleep researchers who met at the 1987 International Sleep Congress in Copenhagen.
- Its samples are stored as little-endian 16-bit integers, and the 2003 EDF+ revision added annotations and discontinuous recordings.
- What Analyser reads
- Open scientific, medical and engineering files: DICOM scans, NIfTI brain volumes, Garmin FIT/TCX activities, FITS astronomy frames, FASTA/FASTQ sequences, chemistry structures (MOL/SDF/MOL2/CIF/XYZ), Gerber/Excellon PCB data, SPICE netlists, EDF/BDF biosignals, JCAMP-DX spectra, SPSS/Stata/SAS datasets and VTK/ParaView meshes - metadata extracted entirely in-browser.
- Depth of analysis
- .EDF is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .EDF file
- Drag a .EDF file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.