Simon Willison’s Weblog

Sketchpad - Online Paint/Drawing application (via) Impressive canvas based bitmap drawing tool with an extremely smooth UI.

Posted 7th February 2010 at 10:45 am

Recent articles

JustHTML is a fascinating example of vibe engineering in action - 14th December 2025
OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI - 12th December 2025
GPT-5.2 - 11th December 2025

canvas 38 sketchpad 2

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe