This video presentation establishes size of the Electron as the Quantum Vacuum perceives it. The material presented herein is an extract from a published 2007 & 2009 Research Articles [links below]:
(1) https://www.researchgate.net/publication/269312159_The_Natural_Philosophy_of_Fundamental_Particles
(2) https://www.researchgate.net/publication/252320249_Derivation_of_fundamental_particle_radii_Electron_Proton_and_Neutron