Simple Image Lazy Load and Fade

One of the quickest and easiest website performance optimizations is decreasing image loading. That means a variety of things, including mi...

Loading image fadeIn with CSS + Javascript

Example I've deliberately made the image quite a large filesize so you'll have a chance to see the 'loading…' message b...

Add UTM parameters with jQuery

On a recent project we needed to add UTM query parameters (for Google Analytics tracking) to all outbound links to a specific domain. I did...

How to Flush Memory Cache on Linux Server

Many times systems faced low memory issues of Linux systems running a while. The reason is that Linux uses so much memory for disk cache is ...

JSON encode utf8 in PHP

Using json_encode and JSON_UNESCAPED_UNICODE constants json_encode($response,JSON_UNESCAPED_UNICODE) Using json_encode, iconv and preg_mat...