Your best bet is probably to add a button onto the standard account object page that when click calls your visualforce page that renders as a pdf. https://www.marksgroup.net/blog/open-a-visualforce-page-with-a-button/ https://developer.salesforce.com/docs/atlas.en-us.pages.meta/pages/pages_output_pdf_renderas.htm
https://www.marksgroup.net/blog/open-a-visualforce-page-with-a-button/
https://developer.salesforce.com/docs/atlas.en-us.pages.meta/pages/pages_output_pdf_renderas.htm