Free browser tool scans your Rubik's Cube and solves it in near 20 moves

That scrambled Rubik’s Cube collecting dust since the early pandemic has finally met its match. A handful of free browser tools now let you point your phone camera at a physical cube and get a step-by-step solution - no app download, no account, no install. Just a browser tab doing computer vision and combinatorial math in real time. This is the kind of thing that has no right to work as smoothly as it does.

Point, Scan, Solve: What Actually Happens

The entire workflow - from scrambled cube to animated solution - takes about a minute.

Grant camera access, hold each of the six faces inside an on-screen grid, and let the tool classify all 54 stickers by color. Once verified - each color should appear exactly nine times - hit Solve. The algorithm computes a sequence typically around 20 moves, then animates it on a 3D cube you can step through at your own pace. Ruwix’s scanner specifically targets solutions in “just 20 steps,” according to its documentation, which aligns with the proven mathematical upper bound for any valid 3×3 scramble.

• Works on phone, tablet, or laptop - any modern browser with camera access
• No account, no ads, no storage permissions beyond camera
• Manual color correction available when lighting causes misreads
• Tools in this space include CubeUnstuck, Ruwix, Cubzor, and TinyToolTown’s Rubik’s Rubrics
• Even, direct lighting prevents the most common errors: red-versus-orange and white-versus-yellow confusion

That 20-move ceiling deserves an honest footnote. Most consumer tools use near-optimal algorithms - likely Kociemba’s two-phase method or something similar - targeting around 20 moves. That’s not marketing fluff. Mathematicians proved in 2010 that any valid 3×3 state is solvable in 20 moves or fewer, a result known as God’s Number. No tool on this list formally guarantees the absolute shortest path for every scramble. The distinction is real, but for anyone who just wants their cube fixed, it won’t matter at all.

Why a Browser Tab Beats an App Store Download

Skipping installation entirely is the feature - and for a one-time fix, it’s the right call.

Native apps like Scrambled handle the same job but require installation. CubeUnstuck makes the counter-argument explicitly: tap a link, the browser opens your camera, scanning starts in seconds. No storage overhead. No permissions creep. No waiting for an update to clear. The tools themselves - CubeUnstuck, Ruwix, Cubzor, and TinyToolTown’s Rubik’s Rubrics - all run client-side, with no data upload or persistent account required according to their public documentation. For a one-time fix on a cube you found in a drawer, the web tool wins on friction alone.

The bigger picture is worth a moment. Computer vision, combinatorial optimization, and 3D rendering running free inside a browser tab - the kind of capability that would have been a serious PhD project a decade ago is now a bookmark. Your cube is officially out of excuses.