Convert a PostgreSQL database from LATIN1 to UTF-8

When we initially launched the Hub in private beta, we made the mistake of not specifying UTF-8 encoding in the database cluster, which had the unfortunate side effect of raising an exception every time a user would submit non-ascii characters in an input field.

PNG vs JPG: 6 simple lessons you can learn from our mistakes

Page load times are important. Amazon insiders estimate that every 100 ms increase in latency costs Amazon roughly %1 of profit.

Simply put: visitors hate slow sites, so don't make them wait.

Unfortunately, many web sites, including this one up until recently, are slowed down by inefficiently encoded images. Note that there are many other components to page load times and if you're looking to optimize your web site you should analyze and understand all of them. But today we're just going to focus on the images.

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