What is a .DRL file?
DRL is an Excellon drill file telling the factory where to drill a PCB’s holes.
- Did you know
- Drill files pair with Gerbers to tell the machine where each board hole goes.
- The format takes its name from Excellon Automation, whose 1970s-80s drilling machines made it the de-facto PCB standard.
- It is a plain-text numerical-control file listing each tool’s diameter and the X-Y coordinate of every hole.
- 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
- .DRL 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 .DRL file
- Drag a .DRL 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.