10‐position O of rhodamines with a cyclo‐ketal. KRhs display an intense NIR emission peak at 700 nm with fluorescence quantum yields up to 0.64. More importantly, they, without the aid of enhancing buffer, exhibit stochastic fluorescence off–on switches to support time‐resolved localization of single fluorophore. KRhs are functionalized into KRh‐MitoFix, KRh‐Mem and KRh‐Halo that demonstrate mitochondria, plasma