Simon Willison’s Weblog

Design. A very fancy suite of design tools wrapped up in a bookmarklet (that loads an external script). Includes grids, rulers, measurements and a crosshair.

Posted 20th December 2007 at 4:53 pm

Recent articles

Olmo 3 is a fully open LLM - 22nd November 2025
Nano Banana Pro aka gemini-3-pro-image-preview is the best available image generation model - 20th November 2025
How I automate my Substack newsletter with content from my blog - 19th November 2025

allan-jardine 2 bookmarklets 12 design 80 grids 1

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