About LegoFinder

How It Started

LegoFinder started the way most side projects do: with a real problem that needed solving. After buying a box of mixed LEGO at a yard sale, we spent hours trying to figure out which sets were in there. The official LEGO instructions site requires a set number, but when you're staring at 2,000 loose bricks, you don't have a set number — you have a pile.

We realized that modern AI could solve this. Upload a photo of built or partially built LEGO, and the system could identify which set it belongs to and link directly to the official instructions PDF. That simple idea became LegoFinder.

What We Built

LegoFinder has grown from a simple photo tool into a full LEGO reference platform:

• AI Set Identification — Upload a photo of any LEGO set (built, partial, or boxed) and get it identified in seconds. The AI analyzes shapes, colors, and distinctive elements to match against our database.
• Part Identifier — Photograph a single LEGO brick or element to find its part number, name, color, and category.
• Set Database — Browse and search over 16,800 LEGO sets spanning 1955 to 2026, across 152 themes. Filter by theme, piece count, age range, complexity, and more.
• Instructions Finder — Every set page links directly to the official LEGO building instructions PDF on LEGO.com, so you never have to search manually.
• Guides & Blog — Practical guides on finding lost instructions, identifying vintage sets, organizing collections, and understanding LEGO themes and history.

By the Numbers

Who Uses LegoFinder

How the AI Works

LegoFinder uses large multimodal AI models trained to understand visual content. When you upload a photo, the system analyzes the image for distinctive features: brick colors, shapes, printed elements, minifigure details, and overall structure. It then cross-references these visual features against known LEGO sets to find the best match.

The system works best with clear, well-lit photos of built or partially built sets. It can also identify sets from photos of the box, the instruction booklet cover, or even distinctive minifigures. For detailed tips on getting the best results, see our How It Works guide.

AI identification is not perfect. Accuracy varies depending on image quality, set size, and how much of the set is visible. We always recommend verifying results by checking the set number against the official LEGO instructions page.

Editorial Independence

LegoFinder is an independent project. We are not affiliated with, endorsed by, or sponsored by the LEGO Group. LEGO is a registered trademark of the LEGO Group of companies. All LEGO set images and instruction PDFs are the property of the LEGO Group and are linked to from official sources.

Set data on LegoFinder is sourced from Rebrickable, a community-maintained LEGO database. Set images are credited to Rebrickable contributors where applicable.

Privacy & Data

We take privacy seriously. Photos uploaded for identification are processed by the AI and are not stored permanently, sold, or shared with third parties for marketing purposes. The site does not require an account, does not collect personal information beyond what is needed for basic functionality, and does not track users across other websites.

For complete details, read our Privacy Policy and Terms of Use.

Get in Touch

Have a question, found a bug, or want to suggest a feature? We read every message. Use the form below or visit our contact page.