A short description of how GZIP works: [ stackoverflow. A short description of how the algorithm works: [ stackoverflow. Add a comment. Active Oldest Votes. Improve this answer. Joshua Davies Joshua Davies 2 2 silver badges 2 2 bronze badges. The first two links are broken — alizeyn. The Overflow Blog. Industry leaders that increasingly rely on online to succeed in the coming decades, as we continue to see software is feeding the world.
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Please check your inbox or spam folder to download ebook. Skip to content. Cases make perfect. Check out some of our latest work Use cPanel to enable GZIP Compression For this third method, it is once again recommended you employ the help of your hosting company, However, if you want to enable GZIP o your own, login into your cPanel and scroll down until you reach the section titled software.
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Elizabeth Howell. Hsumonlei Aung. Views Total views. Gzip is a data compression algorithm capable of compressing and decompressing files quickly. The name also refers to two other technologies: the software used to compress and decompress files, and the format those files are stored in.
Gzip can compress almost any file type, from plain text to images, and is fast enough to compress and decompress data on-the-fly. Web servers use gzip to reduce the total amount of data transferred to clients. When the web server receives the request, it generates the response as normal, then checks the Accept-Encoding header to determine how to encode the response. If the server supports gzip, it uses gzip to compress each resource.
It then delivers the compressed copies of each resource with an added Content-Encoding header , specifying that the resource is encoded using gzip. The browser then decompresses the content into its original uncompressed version before rendering it to the user.
However, this comes at a cost. Compression is a CPU-intensive process, and the more you compress a file, the longer it takes. Because of this, gzip offers a range of compression levels from 1 to 9; 1 offers the fastest compression speed but at a lower ratio, and 9 offers the highest compression ratio but at a lower speed. The gzip application uses level 6 by default, favoring higher compression over speed. Nginx, on the other hand, uses level 1, favoring higher speeds over file size savings.
There are two ways to compress web content: dynamically and statically. Dynamic compression is useful for content that changes frequently, such as application-generated web pages. On the other hand, static compression compresses each file in advance and delivers this pre-compressed version when the original file is requested.
This saves CPU time at the cost of a slightly longer deployment. To enable dynamic compression, just add gzip on; to your global, site, or location configuration block.
The gzip module supports a number of different configurations including the type of files to compress, the compression level, and proxying behavior.
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