Ruler bookmarklet
29th March 2003
This Ruler bookmarklet is really cool—it shows the current coordinates of the cursor within the browser window and allows you to draw boxes and see how large they are in pixels—invaluable for tweaking CSS layouts.
More recent articles
- New prompt injection papers: Agents Rule of Two and The Attacker Moves Second - 2nd November 2025
- Hacking the WiFi-enabled color screen GitHub Universe conference badge - 28th October 2025
- Video: Building a tool to copy-paste share terminal sessions using Claude Code for web - 23rd October 2025