Explainer
What Is a Depth Map? A Plain-Language Guide
Depth maps power phone portrait mode, VFX compositing, and AI 3D conversion. Here's exactly what they are and how monocular AI estimates them from a single photo.
Comparison
Image to 3D Online Free No Sign-Up — 2026 Tools Compared
Every major browser-based image-to-3D tool compared honestly: what's truly free, what requires an account, and what "free tier" actually means in the fine print.
Tutorial
How to Make a 3D-Printable Lithophane From Any Photo
Step-by-step: upload, convert, print. Includes common mistake fixes and filament recommendations for the best backlit result.
Explainer
Classic Mode vs. AI Mode for Image to 3D Conversion — When to Use Each
When does brightness-as-depth outperform a neural depth model? The answer is more nuanced than you might expect.
Guide
OBJ vs STL vs GLB vs PLY — Which 3D Format Should You Use?
A practical guide to choosing the right 3D file format for 3D printing, game engines, web embeds, and scientific tools.
Tutorial
Normal Maps for Beginners — What They Are and How to Make One
Everything you need to know about normal maps: the RGB encoding, how they trick lighting, how to use them in Unity and Blender, and how to generate one from a photo.