blog.paulgueller.com

I recently discovered an interesting applet developed by Aharef in 2006 that uses the Processing programming language to graph the element tree of a given web page.

For instance the current markup on this site gets rendered like this:

According to the documentation and examples, the colors represent:

• blue: links (the A tag)
• red: tables (TABLE, TR and TD tags)
• green: DIV tags
• violet:  images (the IMG tag)
• yellow: forms (FORM, INPUT, TEXTAREA, SELECT and OPTION tags)
• orange: linebreaks and blockquotes (BR, P, and BLOCKQUOTE tags)
• black: the HTML tag, the root node
• gray: all other tags

Processing is an open-source programming language and development environment used for prototyping and producing images, animation, and interactions within a visual context. The code-graphing applet requires Java, but processing.js has made the language more widely accessible and available for experimentation.