Will the JavaScript tracker tag slow down or break my site?

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No! Here are some principles behind our JavaScript serving infrastructure and the code itself.

• Our code is compressed and minified. Both at the JavaScript minification level and at the gzip level (by our servers).
• We serve from global servers. As detailed in our Servers and Infrastructure page, Parse.ly JavaScript is served using a global DNS provider and a global CDN provider with edge locations scattered all over the United States and even across Europe, Asia, and South America.
• We use an async approach. Our code loading system is specifically built to async-load the biggest asset after the page has already downloaded, parsed, and executed other assets. This is described in our Tracker technical document.