Bookmarklets, and why you should use them

MOST of us have been using web browsers for a long time, yet relatively few of us know this relatively obscure feature: browsers understand URLs that begin with javascript: instead of http: or https: protocols, and can actually execute the JavaScript code in the URL when you request it. Sounds like a security nightmare? Potentially, yes. You should be careful about what URLs you click on.

However! Harnessed in the right way, these javascript: URLs can be incredibly useful–enter bookmarklets. …

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