PBR Texture Libraries

After retopology and UV unwrap, the textures on the scan are usually the messy bit — uneven lighting, projected shadows, missing geometry. A library of clean PBR materials lets you replace or repaint sections, make hero renders, or simply prop up a scene. Pairs with Mesh Retopology (the topology side), 3D & Spatial Design Tools (Blender / Substance), 3D / WebGL (web delivery), and Photogrammetry Software for the original textures. The 2024–2026 default is Poly Haven for free CC0 PBR + HDRI, Quixel Megascans for free-with-Unreal-Epic-account, and AmbientCG for the long-tail catalogue.

Free / CC0 libraries

• ★ Poly Haven — free, CC0; ~1,500 PBR materials + ~700 HDRIs + ~500 models. The default free library; quality is uniformly high. Patreon-funded.
• ★ AmbientCG (formerly cc0textures) — free, CC0; ~2,000+ PBR textures; very long tail; older site, broader coverage.
• TextureHaven — merged into Poly Haven.
• 3DTextures.me — free, CC0; smaller; some unique materials.
• ShareTextures — free; mixed licensing — read each entry.
• CGBookcase — free, CC0 / personal; smaller curated set.
• Texture Ninja / Texture Box (free section) — mixed; CC-BY for many.

Free for some users

• ★ Quixel Megascans — closed source; free for Unreal Engine 5 users (any project on UE5; Epic acquired Quixel). Massive scanned PBR library — surfaces, props, atlases, decals, plants, MetaHumans. The single biggest free PBR resource if you can use it under Epic's Unreal-tied license. Outside UE5, paid.
• Adobe Substance 3D Assets — paid (subscription); included with Substance subscription.
• Polygon (Synty Studios) — paid asset packs; free starter packs occasionally.

Hosted / paid libraries

• Substance 3D Source (Adobe) — paid (subscription); thousands of procedural / scanned PBR materials.
• CGAxis, 3DCollective — paid; older PBR libraries.
• GameTextures, Texture Box, Texture Haven Pro — paid tiers.
• Real Displacement Textures (RDT) — paid; high-quality displacement-heavy materials.

Texture authoring (paid)

• ★ Substance Painter (Adobe) — paid (subscription); the industry-standard PBR painter; bake from high-poly to low-poly, paint, smart materials, export to glTF / engine-ready.
• ★ Substance Designer (Adobe) — paid; node-based procedural material authoring.
• Mari (Foundry) — paid; high-end texture painting; VFX standard.
• 3D-Coat — paid; paint + retopo + UV.
• Marmoset Toolbag — paid; baker + previewer.
• Armor Paint — paid OSS (you pay for the binary); 3D paint app.

Texture authoring (free)

• ★ Blender Texture Paint — free, OSS; paint directly on 3D models in Blender; a credible Substance Painter alternative for most non-AAA work.
• Material Maker — free, OSS Substance Designer alternative; node-based PBR.
• Quixel Mixer — closed source, free (Epic-owned); texture-painting on meshes; in maintenance mode but still distributed.
• xNormal — free; classic Windows normal-map baker.
• Materialize (BoundingBoxSoftware) — free; convert a single photo into PBR maps.

Imaging / single-photo to PBR

• Materialize — free Windows; convert photo → albedo / normal / displacement / roughness; quick and dirty.
• PixaFlux — free; texture compositor.
• AwesomeBump — free, OSS; Windows / Linux; convert photo to PBR maps.
• Substance Sampler — paid; Adobe's photo-to-PBR (used to be Alchemist).

Map types you'll actually use

• Albedo / Base Color — flat colour, lighting-free.
• Normal — directional surface detail; OpenGL or DirectX convention.
• Roughness / Glossiness — micro-surface light scattering.
• Metalness — 0 / 1 PBR flag.
• Ambient Occlusion (AO) — soft self-shadow.
• Displacement / Height — geometric detail at render time.
• Emissive — self-lit areas.
• Opacity — transparency.

HDRI lighting

• ★ Poly Haven HDRIs — free, CC0; ~700 HDR environment maps; the default for IBL.
• HDRI-Skies — paid; sky-only HDRIs.
• HDRMaps — mixed.
• NoEmotion HDRs — free.

Pick this if…

• Default free CC0 PBR + HDRI: Poly Haven.
• Long-tail material search: AmbientCG.
• Unreal user, want top-tier scanned PBR: Quixel Megascans (free with UE5).
• Pro PBR authoring: Substance Painter + Designer (paid).
• Free PBR authoring inside an existing 3D app: Blender Texture Paint.
• Photo to PBR: Materialize (free) or Substance Sampler (paid).
• Procedural materials, FOSS: Material Maker.