What is a .BDF file?
BDF is a 24-bit biosignal recording format, an extension of EDF used for EEG. The same extension is also the X11 Glyph Bitmap Distribution Format for bitmap fonts, which is plain text.
- Did you know
- BDF extended EDF to 24-bit precision for BioSemi’s EEG systems.
- BDF is a 24-bit extension of the older 16-bit European Data Format, created because EDF could not store anything wider than 16-bit samples.
- Each sample is stored in three bytes, and the later BDF+ variant mirrors EDF+ for richer annotation.
- What Analyser reads
- Open scientific, medical and engineering files: DICOM scans, NIfTI brain volumes, Garmin FIT/TCX activities, FITS astronomy frames, FASTA/FASTQ sequences, 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
- .BDF 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 .BDF file
- Drag a .BDF 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.