Integrate. If you love it, check the API documentation. There are ready-made code snippets for Python, Node.js, and cURL.
Where a standard PDF reader sees random text blocks, VisualWize PDF sees:
Many players suffer from "blind spots" or "dropping pieces" in their calculation. They might calculate a line 5 moves deep, but by the 5th move, they have mentally "lost" the position of a rook on the other side of the board. VisualWize fixes this disconnect.