Free jqgrid 4.8 with font awesome icon set is used.
Standard action buttons are defined using colmodel
[{\"name\":\"_actions\",\"search\":false,\"width\"
You can solve the problem in many ways. For example you can add CSS rule like the following
.jqgrow .ui-jqgrid-actions > .ui-pg-div > span { font-size: 24px; }
or
.jqgrow .ui-pg-div > span.fa { font-size: 24px; }
The demo demonstrates the results. It used additionally another width
value as default
{ name: "act", template: "actions", width: 72 }