Rendering Heavy Drawings in the Browser — Without Losing Performance

Working with technical drawings online is a balancing act.
Performance, precision, and accessibility all fight for attention — and most solutions compromise one to achieve the other.

At Viewsoft, we built our viewing architecture with one goal: to make large and complex drawings instantly available, directly in the browser, without relying on heavy back-end rendering or long load times. With us, we have a proven technology built up by Rasterex.

The challenge with performance

Large drawings — especially PDF, CAD, and hybrid files — are demanding. Traditional viewers often try to render everything at once, forcing the browser to handle far more data than necessary. The result? Slow loading, laggy zooming, and frustrated users.

A high-performance viewing engine needs to work smarter: load only what’s visible, render only what’s relevant, and make the rest available when needed.

Our approach: modular and optimized

Viewsoft’s architecture is built on the idea that every drawing format behaves differently — and should be handled differently.

Instead of one generic renderer, our system combines specialized engines that are tuned for their specific job.
Vector-based formats are handled with selective rendering, drawing only visible geometry. Document formats are optimized through intelligent tile loading.

All rendering happens client-side, in the user’s browser.
No heavy server infrastructure. No waiting for pre-processed tiles.
Just direct, high-fidelity visualization — instantly accessible.

Why client-side matters

Client-side rendering gives organizations freedom and control. It removes latency, reduces bandwidth usage, and allows data to stay within the user’s environment.

It also scales effortlessly. Whether you’re viewing one drawing or hundreds, performance remains consistent because the workload happens where it’s most efficient — right on the device.

Ready for integration

The same architecture that powers Viewsoft’s Web Viewer also enables seamless embedding.
Software vendors can integrate the viewer directly into their own platforms through a lightweight interface, maintaining their own look, feel, and user management.

For enterprises, it means complete control over where the data lives and how the viewer connects to existing systems.

The result

Instant viewing.
Smooth interaction.
And a foundation designed to grow with your workflow — not slow it down.

→ Explore the Web Viewer Module

See how our modular viewing technology can be embedded directly into your platform.