Simon Willison’s Weblog

Mozilla web-sniffer

13th September 2002

Because I keep on forgetting where it is, View HTTP and HTML Source, a handy tool for debugging HTTP type stuff courtesy of those fine Mozilla folk.

Posted 13th September 2002 at 12:48 am · Follow me on Mastodon, Bluesky, Twitter or subscribe to my newsletter

More recent articles

Changes in the system prompt between Claude Opus 4.6 and 4.7 - 18th April 2026
Join us at PyCon US 2026 in Long Beach - we have new AI and security tracks this year - 17th April 2026
Qwen3.6-35B-A3B on my laptop drew me a better pelican than Claude Opus 4.7 - 16th April 2026

This is Mozilla web-sniffer by Simon Willison, posted on 13th September 2002.

Next: mod_python donated to the ASF

Previous: Fun with Unicode

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

Previously hosted at http://simon.incutio.com/archive/2002/09/13/mozillaWebSniffer