RNDRS

RNDRS is a web-based tool that turns architectural sketches, massing models, and CAD views into photorealistic visualizations. You start by uploading an image of your design—anything from a hand-drawn sketch to a screenshot from software like SketchUp or Revit. Then, you use a simple node-based editor to wire that image to a 'Render' node, add a text prompt describing materials and lighting, and generate a new image. The whole process takes about 11 seconds, and the output respects the original geometry and proportions of your design.

What sets RNDRS apart is its specialized engine and visual workflow. It's not a generic image generator; it's built specifically for architectural disciplines to preserve massing and openings. The node editor lets you chain operations visually: you can take a render, erase unwanted elements like construction cranes, extend the image borders, upscale it to 4K, or even turn it into a short video flythrough. You can save these node graphs as reusable workflows for future projects.

This tool is built for architects, interior designers, landscape architects, and master planners. It's useful for quickly iterating on design concepts, creating client-ready presentation materials from early-stage models, and producing polished visuals for portfolios without needing complex 3D rendering software. The free tier offers a few credits to try it out on a real project.