Free Normal Map Online Generator

When working on 3D projects, I often needed to generate normal maps quickly. Traditional methods required opening heavy software or installing complex plugins. Many developers, artists, and hobbyists really just want a simple, instant, online tool. That’s why I built Normal Map Online.

What it does

Normal Map Online is a free online normal map generator that lets you: • Upload a texture or height map. • Instantly generate a high-quality normal map. • Preview the result in real time with a 3D viewer. • Download the map as PNG/JPG for direct use in Unity, Unreal, Blender, and other engines.

How I built it

I built the tool using HTML, CSS, JavaScript, and WebGL (Three.js). The interface is styled with TailwindCSS for a modern, minimal look. The workflow is designed around “Upload → Adjust → Download,” so users can get results in just a few seconds.

Challenges I ran into • WebGL rendering consistency: different browsers and devices handle lighting and textures differently, which required extra tuning. • Balancing simplicity and completeness: keeping the interface clean for beginners while still offering advanced features for power users. • SEO and performance: making the tool lightweight and fast while also discoverable by search engines.

Accomplishments that I’m proud of • Created a truly instant web tool that works without any installation. • Designed a modern, minimalist UI that makes complex features approachable. • Helped developers and creators save time and improve their workflow.

What I learned • UI/UX details make or break usability — even small things like slider placement and hint text matter. • When launching niche tools, SEO strategy and product positioning are just as important as the core functionality. • How to handle WebGL cross-browser quirks and debug 3D rendering issues.

What’s next for Normal Map Online • Batch processing: generate multiple maps at once. • Higher-resolution exports for professional use cases. • API access for developers to integrate into pipelines. • More learning resources and tutorials to help 3D beginners get started quickly.

What about the 11 years old https://cpetry.github.io/NormalMap-Online/ (https://github.com/cpetry/NormalMap-Online)? Are you the same author or did you just steal it and made it worse? Yours looks like a carbon copy that uses 4 times the resources of the original.