Go to https://wakatime.com/share/embed, Format "JSON", Charttype "Coding Activity", Daterange "Last Year" and click "Get Embeddable Code. Copy the given url and paste it here"
Example: https://wakatime.com/share/[@USERNAME]/XXXxxxxxx..xxxxxxxxx.json

Choose how to display your coding activity on the full layout

Choose how to display your coding activity, affects the half horizontal layout

Select the time range for your activity data

Show or hide labels on the X-axis of charts (dates)

Show or hide labels on the Y-axis of charts (hours)

Enable data grouping for line charts (weekly median for 90 days, monthly median for year)

Choose how dates are displayed on the X-axis

Select which metrics to display in the dashboard (up to 5). Use shift+click to select multiple.

Show or hide the legend below the contributions grid

Show or hide the WakaTime title bar