gThumb has a plug-in system for extensions. Some standard features are implemented as extensions and are supplied with the standard distribution. Users may write (and share) additional extensions.
gThumb-ek plugin-sistema bat du hedapenetarako. Eginbide estandar batzuk hedapen gisa inplementatuta daude, eta banaketa estandarrarekin hornitzen dira. Erabiltzaileek idatz (eta parteka) ditzake hedapen gehigarriak.