How to download and setup page-timing
Open terminal and run command
                                            git clone https://github.com/fiverr/page-timing.git
                                        
                                        git clone is used to create a copy or clone of page-timing repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with page-timing https://github.com/fiverr/page-timing/archive/master.zip
Or simply clone page-timing with SSH
                                            [email protected]:fiverr/page-timing.git                                    
                                    If you have some problems with page-timing
You may open issue on page-timing support forum (system) here: https://github.com/fiverr/page-timing/issuesSimilar to page-timing repositories
Here you may see page-timing alternatives and analogs
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