Specular Map Generator

A specular map is a grayscale texture that controls how strongly a surface reflects light in specular/glossiness workflows. Bright texels mean sharper, tighter highlights; dark texels mean duller, broader reflections.

Roughness and specular describe the same idea in opposite ways: high specular ≈ low roughness. Modern PBR often uses roughness/metallic (Unreal, glTF); older or hand-authored pipelines may still expect a specular map. Use our roughness map generator if your engine wants roughness instead.

Upload a photo or albedo texture. The tool derives reflectivity from luminance and local contrast — highlights become shinier. Tune contrast, output range, and levels, then download PNG. Processing is 100% local in your browser.

Legacy Blinn-Phong and some specular/glossiness PBR setups still take a specular intensity map. For Unity HDRP Lit or Unreal’s default metallic/roughness, export roughness instead or invert specular to glossiness in your import settings.

Yes. No account, no upload, and no watermark — export at full source resolution.