Made for Electronics & PCB
Electronics & PCB: check your Gerber before you pay for the fab
Finding shorts, clearance and annular-ring issues yourself is cheaper than a fab rejection — view and DFM-check Gerber/Excellon in the browser.
Gerber/Excellon parsed locally, board data not uploaded — good for confidential projects
Layer stackup, DFM checks and PNG export for independent pre-fab review
Merge and reconcile BOM and pick-and-place before assembly
Pre-fab checks
View Gerber, stack layers, run DFM checks and export PNG.
PCB Gerber ViewerLocalView Gerber (RS-274X) and Excellon drill files as a multi-layer board view — zoom, toggle layers, measure in mm/inch, export PNG/SVG. Free, no upload.Gerber DFM CheckLocalGerber DFM checks in your browser, no upload: 55 graded checks, configurable thresholds, mm violation coordinates and MD/JSON/PDF reports. Pro feature.Gerber Layer Stackup — Alignment Check, No UploadLocalOverlay a full set of Gerber and drill files to check layer alignment before fabrication, or diff two revisions — in your browser, no upload. Pro feature.Gerber to PNG ConverterLocalConvert Gerber and Excellon to high-resolution PNG in your browser — free, no upload. Exact long-edge pixels, optional transparent background, batch to ZIP.
Assembly prep
Merge BOM/CPL and flag gaps; OCR and convert supporting docs.
BOM / CPL Merge and CheckLocalMerge BOM and CPL (pick-and-place) CSVs by designator — free, no upload, in your browser. Flag missing parts before PCBA and download the aligned CSV.PCB Gerber ViewerLocalView Gerber (RS-274X) and Excellon drill files as a multi-layer board view — zoom, toggle layers, measure in mm/inch, export PNG/SVG. Free, no upload.PDF to Image ConverterLocalConvert PDF to PNG or JPG images in your browser — free, no upload, no sign-up. Pick pages by thumbnail, set 2×/3× resolution, run batches, export a ZIP.Image OCR Text ExtractorLocalExtract text from images with OCR online — combine any of 20 languages, no upload: it runs in your browser. Free, no sign-up.
Simulation and waveform
SPICE circuit simulation and timing waveform drawing.
SPICE Netlist Simulator OnlineCloudSimulate SPICE netlists online (op/tran/ac) with ngspice — no install, free daily allowance. In-page AC and transient waveforms, DC node voltages, full log.Digital Timing WaveformLocalDraw digital timing waveforms from WaveDrom-style JSON — free online, no upload, no sign-up. Export SVG or PNG for docs.
Large boards and batch DFM
Pro is $15/mo: 500 cloud credits/month and 100 MB per file for large Gerber packages; local viewing stays free.