YSlow

Test results:

After clicking the Run Test button , Yslow will analyze that website. The process is quite quick:

See more details via the link Read More :

Or sort the results by specific categories:

Next to the Grade tab is Components , this is where the list of factors that negatively affect the performance of the website:

Besides, the Statistics tab displays results via graphs and specific data:

Tools:

After the end of the analysis process, the next thing is to fix and repair.YSlow provides a number of tools to improve website performance. But keep in mind that YSlow only gives suggestions, not directly fixes those errors:

For example, when clicking on the All JS Minified link you will see details about the specific code. Then log into the admin account and edit or replace those files:

But the most useful tool that can be used here is smush.it, the application that optimizes capacity and quality on the page just analyzed, so that you will improve somewhat the download speed of the website:

All you have to do is click on the All Smush.it link and wait for the process to finish. Then use the image file of smush.it instead of the current image file:

At the same time, this tool also supports upload and optimization of photos from your computer, very simple and convenient:

But note that Smush.it will automatically rename the image file with the + sign to replace the space in the file name. If you want to refer and learn all the functions of Yslow , please visit here.

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