Console for Mobile Browsers

However, the fact it's a script you have to install on the source page definitely limits its usefulness. Most of the time when I need a console for a mobile browser, it's to debug an error that's occuring on a client or customer's website. They're probably not going to be too thrilled with the prospect of another 100KB of code being downloaded by anyone viewing the site, even if it is behind a URL parameter or flag.

The way that old mobile version of Firebug was available as a bookmarklet just made it significantly more practical to use here.

I wrote a much less impressive bookmarklet editor[0] (years ago) that can also be appended[1] to a mobile page for debugging purposes (note, it doesn't work on, eg, HN, because scripts are blocked by CSP).

[0] https://gabrielsroka.github.io/webpages/bookmarklets.htm

[1]

  javascript:(function () {
      var u = "https://gabrielsroka.github.io/webpages/scripts/";
      var s = document.body.appendChild(document.createElement("script"));
      s.src = u + "js.js";
      s.onload = function () {
          loadScript(u + "bookmarklets.js", function () {
              editor();
              onload();
          });
      };
  }
  )();

https://people.apache.org/~pmuellr/weinre/docs/latest/

Edit: nevermind, I guess it's to make it easier to develop for mobile, no need to connect the phone using USB anymore