It is not possible to resize a gadget out of the box on the dashboard, the sizing is hardcoded and set when the gadget is developed so to make any changes would require creating a new custom gadget based on the code of the original.
For more details check documentarian on Creating a custom Gadget XML Specification HERE
To locate the original gadget, to start out download the jira source code, and the gadget data can be located at - <your_atlassian_jira_src_directory>/jira-project/jira-components/jira-plugins/jira-gadgets-plugin
Atlassian ranks project attributes as the third most important factor impacting performance in the category of data. It’s not surprising, since project attributes are precisely the rules used to ma...
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