bookmarklet.html

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>geojson.io</title>
        <meta http-equiv='content-type' content='text/html; charset=utf-8' />
        <style>
            a {
                border-radius:5px;
                background:#eee;
                padding:5px;
            }
            body {
                color:#222;
                font:normal 12px/20px sans-serif;
            }
        </style>
    </head>
    <body>
        <a href='javascript:var SITE="http://geojson.io";"github.com"==location.hostname&&window.location.href.match(/\.(geo)?json$/)?window.open(SITE+"/#github:"+location.pathname):"gist.github.com"==location.hostname?window.open(SITE+"/#gist:"+location.pathname):alert("Sorry, looks like you aren't on GitHub or aren't looking at a GeoJSON file");'>edit on geojson.io</a> &larr; drag this link to you address bar, and click it to edit a GitHub file in geojson.io
    </body>
</html>