What Is GZIP Compression?

Gzip compression

GZip is a form of data compression, the working concept is similar to how we zip a document file. The idea behind Gzip compression is to reduce the traffic between your web server and users browser. By using Gzip compression you can reduce the file size such as pages, stylesheet, image, javascript up to 70%, GZip is supported by the majority of browser.

A website without Gzip compression is taken longer time to load.

Data 1: Gzip algorithm finds the similar code string within a file then group and compresses it out. In data 1, Gzip found <li> and </li> are repeat the string.
<ol>
<li>abc</li>
<li>def</li>
<li>ghi</li>
<li>jkl</li>
<li>mno</li>
<li>pqr</li>
<li>stu</li>
<li>vwx</li>
<li>xyz</li>
<li>poxse</li>
</ol>

Data 2: Gzip found <li>, </li> and poxse are repeating the string. Data 2 found more matching string than data 1, so the file size after compression is expected to become smaller than of data 1.

<ol>
<li>poxse</li>
<li>poxse</li>
<li>poxse</li>
<li>poxse</li>
<li>poxse</li>
<li>poxse</li>
<li>poxse</li>
<li>poxse</li>
<li>poxse</li>
<li>poxse</li>
</ol>

Is your website supported Gzip compression? You can do a quick check at checkgzipcompression.com