Simon Willison’s Weblog

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27th February 2026

Research Rust Word Cloud CLI — Leveraging Rust’s performance and safety, this CLI tool generates PNG word clouds directly from text input using a custom spiral layout algorithm and efficient grid-based collision detection. It supports flexible options for image size, font scaling, color schemes, and background colors, with all core features—such as stopword filtering, spatial indexing, and layout—implemented from scratch without any external word cloud library.

This is a beat by Simon Willison, posted on 27th February 2026.

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