Hello,
have you tried Firefox's zoom feature? It will let you enlarge, reduce or reset the size of a webpage or any other content displayed on your screen. The zoom feature affects all displayed content.
- To enlarge the size of the displayed content, press both keys Ctrl (Windows, Linux)/command (Mac) and + at the same time.
- To reduce the size of the displayed content, press Ctrl (Windows, Linux)/command (Mac) and - at the same time.
- To reset the size back to default, press Ctrl (Windows, Linux)/command (Mac) and 0 at the same time.
You can also try a Firefox add-on such as Fixed Zoom or Zoom Page WE.
Please let us know if this information helped you!
Thank you.