🫧 Squeeze & Unsqueeze Visualizer

Watch an invisible size-1 dimension shell appear or vanish at any index — the data underneath never moves.

📋 How To Use This Lab
  1. Flip the switch to Unsqueeze or Squeeze, then set the Dimension Index slider.
  2. Press Next Step ▶ to apply it — a dashed "shell" box appears (unsqueeze) or dissolves (squeeze).
  3. Use Previous Step ◀ to undo, or Auto Run ▶▶ to watch a guided 5-step story play itself.
  4. Try squeezing a dimension that isn't size 1 — PyTorch just leaves it alone, no error.
Shelly torch.Size([2, 3]) the underlying data — 6 values, never touched
🤖 SHELLYPick an operation and a dimension index, then press Next Step — I'll add or remove a shell right there.
🧑‍🏫 PROF. TORCHunsqueeze(dim) inserts a size-1 axis; squeeze(dim) removes one — numel never changes either way.

🎛️ Choose an Operation

Squeeze
Unsqueeze