Simon Willison’s Weblog

7th November 2024

Tool iframe sandbox — Test and explore HTML, CSS, and JavaScript code in a sandboxed iframe environment with configurable security restrictions. The left panel provides a code editor for writing HTML content, while the right panel displays a live preview with customizable sandbox attributes that control what the iframe can access and execute.

Posted 7th November 2024 at 3:18 pm

Recent articles

OpenAI agents attacked RubyGems back in May - 12th September 2026
Some thoughts on the Navier–Stokes Millennium Prize Problem - 8th September 2026
The Pelican comparison grid for Astra is pretty interesting - 4th September 2026

This is a beat by Simon Willison, posted on 7th November 2024.

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