Simon Willison’s Weblog

html-whitelist (via) DeWitt Clinton’s web service wrapper aroud the html5lib HTML sanitiser, hosted on AppEngine.

Posted 24th September 2008 at 11:54 pm

Recent articles

GPT-5.2 - 11th December 2025
Useful patterns for building HTML tools - 10th December 2025
Under the hood of Canada Spends with Brendan Samek - 9th December 2025

dewitt-clinton 4 google-app-engine 41 html5 83 html5lib 1 sanitisation 1 security 569

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