Online Gerber Viewer vs EasyEDA Gerber Viewer

If you design PCBs, you've likely searched for "view Gerber files online" and found two names near the top: Online Gerber Viewer and EasyEDA. Both are free browser-based tools. But they solve different problems in fundamentally different ways — and the right choice depends on what you're doing.

Short answer: Use Online Gerber Viewer when you want to quickly preview Gerber/Excellon files with zero upload, zero registration, and full measurement/grid tools. Use EasyEDA's viewer when you're already working inside the EasyEDA/L-CEDA ecosystem and want to stay in one tool.

The Core Difference: Where Does Your File Go?

The privacy difference is the biggest factor. Online Gerber Viewer processes everything locally — the parsing engine (ported from tracespace v5) and LeaferJS Canvas renderer run entirely in your browser. Zero bytes of your PCB data are transmitted. EasyEDA, by contrast, uploads your files to their servers as part of its web-EDA workflow. For unreleased products, client designs, or anything proprietary, local processing is a meaningful advantage.

Feature Comparison

When to Choose Online Gerber Viewer

1. You want zero upload — checking sensitive design files without sending them anywhere
2. You need measurement tools — verifying pad-to-hole alignment, trace widths, via pitches
3. You handle files from many CAD tools — the majority-vote layer identification recognizes KiCad, Altium, Eagle, OrCAD, Allegro, gEDA, DipTrace and more
4. You just need a quick look — drag, drop, done. No project setup, no account, no learning curve
5. You're on a shared/guest computer — nothing to install, nothing left behind

When to Choose EasyEDA

1. You're already using EasyEDA/L-CEDA for design — the viewer is integrated into your workflow
2. You want 3D PCB preview — EasyEDA offers 3D board visualization
3. You need cloud collaboration — sharing designs with team members through EasyEDA projects
4. You're in China — EasyEDA has strong China-market integration and fast local servers

Verdict

These tools are not really competitors — they serve different workflows:

• Online Gerber Viewer is the fastest, most private way to inspect any Gerber/Excellon file set, regardless of which CAD tool produced it.
• EasyEDA's viewer is a convenience feature inside a broader cloud EDA platform.

For the specific job of reviewing Gerber output before sending it to a fab, Online Gerber Viewer's combination of zero-upload privacy, 19-CAD layer identification, and professional measurement tools makes it the more capable and safer choice. If you need 3D rendering or cloud collaboration, EasyEDA is the better fit.

Bottom line: Try both. Load the same board into each. If privacy, measurement precision, and multi-CAD compatibility matter to you, Online Gerber Viewer will likely become your default — even if you design in EasyEDA.