I made this cute, handy little tool a few years ago while on a train journey to London. I found myself thinking, “Why doesn’t something like that exist?” and then I thought I’d just make it.

So here’s the result. A tiny little JavaScript-based app that works as well today as it did when I made it.

Bookmark this, because one day I hope you find it useful.

>> Try it for yourself

Click on the video to watch the short demo (only 3 minutes, it’s really simple!)

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starfire

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