Gerber and Excellon PCB Viewer

Inspect individual Gerber PCB layers and Excellon drill files, including supported GBR, GTL, GBL, DRL and ZIP inputs. Aperture macros and step-repeat are not supported. Layer overlays are a Pro feature.

Viewers by extension

GBR Viewer
GER Viewer
GERBER Viewer
GBL Viewer
GTL Viewer
GBS Viewer
GTS Viewer
GBO Viewer
GTO Viewer
GML Viewer
GM1 Viewer
GM2 Viewer
GKO Viewer
GPB Viewer
GPT Viewer
DRL Viewer
XLN Viewer
EXC Viewer
ZIP Viewer

How to open a file

Choose a supported file in the TotalViewer workspace.
Inspect pages, layers, sheets or 3D geometry with zoom and navigation.
Check conversion warnings and compare the preview with the original application.

Supported scope and limits

PCB files: 16 MiB; ZIP extraction 16 MiB total, 64 entries, 16 layers and 50,000 commands per layer. Units and coordinate-format headers are required. Aperture macros and step-repeat are not supported. Basic viewing shows one layer; Pro enables supported layer overlays. ZIP support is for Gerber/Excellon bundles.

Detailed compatibility guide (Korean)

Free basic viewing

Open up to three files per day in the same browser without signing in. The count resets at midnight Korea time. Files are processed on your device. File, geometry and memory limits apply to both Free and Pro.

Pro advanced tools

Advanced tools such as search, personal review, measurement and comparison depend on the file format and require Pro. Pro removes the daily file-open limit. Payment does not guarantee file compatibility or accuracy.

File guides are available in your selected language. Workspace controls are currently in Korean.