Bump Map Generator

NormalMapAI (normalmapai.com) is a free online bump map generator that converts any 2D photo into a grayscale bump map directly in your browser. This bump map generator runs 100% locally via WebGL2 with a live 3D shader ball preview, zero watermarks, and instant PNG or engine ZIP export.

Upload a JPG, PNG, or WebP image into the NormalMapAI bump map generator, adjust the bump contrast and sharpness sliders while orbiting the 3D preview, and download your grayscale PNG. The bump map generator automatically maps brighter pixels to raised ridges and darker pixels to recessed grooves.

A bump map generator outputs a single-channel grayscale image that stores relative surface height, which the renderer converts into slopes at render time. A normal map generator outputs a three-channel RGB texture that stores explicit X, Y, and Z surface directions for faster, more accurate real-time game lighting.

Export your PNG from the NormalMapAI bump map generator, load it into a Blender Image Texture node with Color Space set to Non-Color, and connect the Color output to the Height input of a Bump node. Set the Bump node Strength between 0.1 and 0.4, then plug its Normal output into your Principled BSDF shader.

Yes, combining a bump map generator texture with a baked normal map is standard practice for adding micro-scratches, fabric weave, or skin pores over larger sculpted forms. In Blender, plug your normal map into the Normal input of a Bump node and feed the bump map generator grayscale output into the Height input.

Grainy or stepped relief happens when JPG compression noise is amplified by high bump strength. In the NormalMapAI bump map generator, apply a slight pre-blur to soften compression blocks, lower the in-engine Bump Strength, or export a 16-bit height/bump channel from our bump map generator.

In any bump map generator, white (1.0) pushes the perceived surface outward and black (0.0) pushes it inward. If dark mortar lines or engraved letters appear raised instead of recessed, toggle the Invert option inside the NormalMapAI bump map generator or check Invert on your Blender Bump node.

If your source photo has hard borders, any bump map generator will turn those edges into a bright or dark seam line under lighting. Run your texture through the NormalMapAI Seamless Texture tool first, then pass the tileable image into the bump map generator.

Yes, the NormalMapAI bump map generator is built on our full PBR pipeline, allowing you to derive matching normal, 16-bit height, displacement, roughness, ambient occlusion (AO), metallic, and specular maps from one upload and download them in a single ZIP.

Yes, all textures exported from the NormalMapAI bump map generator are 100% free for commercial games, architectural visualization, product renders, and client work. Because the bump map generator runs locally in your browser memory, your images are never uploaded to a server.

The NormalMapAI bump map generator supports 512, 1024, 2048 (2K), and 4096 (4K) exports. Use 2048 px from the bump map generator for standard game props and architectural surfaces, 4096 px for hero close-ups, and 1024 px for mobile or background assets.

The NormalMapAI bump map generator provides a fast, zero-install bump map generator right in your browser, replacing manual Photoshop desaturation, high-pass filtering, and levels adjustments with interactive sliders and a live 3D lit preview.