Why Use Visual Design Diff (VDD)
In modern hardware design, even small edits can introduce costly errors that are difficult to detect through manual comparison. VDD eliminates that uncertainty by turning design differences into clear, visual intelligence. Instead of relying on memory or time-consuming side-by-side reviews, engineers get an immediate, accurate view of exactly what changed, and where it matters. This improves review speed, reduces the risk of missed issues, and strengthens confidence in every release. With VDD, teams move from reactive checking to proactive validation, ensuring design integrity is maintained from one iteration to the next.
Key Capabilities
Detects device, parameter, wiring, hierarchy, and symbol-level changes for reliable reviews and reduced risk of missed functional modifications.
Captures poly, metal, via, implant, routing, and routing changes to improve layout correctness and accelerate change review and verification.
Automatically tracks and preserves every iteration of schematic and layout changes for long-term traceability, debugging, and design understanding.
Connects SOS version control with VDD visual diff to reduce misinterpretation, re-spins, and improve version-to-visual clarity.
Enables side-by-side visual comparisons with shared understanding across teams, improving alignment, review speed, and decision-making quality.
See It in Action
Discover how VDD transforms complex schematic and layout comparisons into clear visual insights. See exactly what changed, where it changed, and why it matters, helping engineers accelerate reviews, reduce errors, and make decisions with confidence.
Resources to Get You Started
eBooks
Startup Best Practices
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The Graphical Diff Platform for Schematics and Layouts
Have Questions? We've Got Answers
VDD (Visual Design Diff) is a graphical comparison tool from Keysight that shows exactly what changed between two versions of a schematic or layout. It highlights differences such as nets, devices, parameters, and layout shapes directly inside Cadence Virtuoso, enabling fast and accurate design reviews with visual clarity.
VDD automatically detects and visually highlights changes in schematics and layouts, including device modifications, parameter updates, wiring changes, and physical layout differences. This eliminates manual comparison errors and helps engineers quickly understand design evolution and identify potential issues earlier in the workflow.
VDD runs natively inside Cadence Virtuoso, allowing engineers to run comparisons directly from the design menu and see results instantly within their design environment. This improves productivity, reduces workflow friction, and enables faster, more confident design reviews without leaving Virtuoso Studio.