PRTG Catches Network Issues Before They Cause Downtime
Threshold-based alerts flag problems early, so your team can act before users notice, not after.
Reactive troubleshooting usually means hearing about a problem from frustrated users, not your monitoring tool. PRTG sets threshold-based alerts across devices, servers and applications, notifying your team by email, SMS or push the moment a metric crosses a set limit. That means catching a failing disk or overloaded server before it becomes an outage and getting time back from firefighting. Start a free trial and set your first alerts today.
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...It uses Intersection Observer API to observe when the image enters the browsers viewport. Original code was inspired by YUI ImageLoader utility by Matt Mlinac. New version loans heavily from a blog post by Dean Hume. By default Lazy Load assumes the URL of the original high resolution image can be found in data-src attribute. You can also include an optional low resolution placeholder in the src attribute. If you prefer you can explicitly pass the image elements to the factory. Use this for example if you use different class name. ...