The primary challenges impeding the extensive application of adsorption for indoor air purification have been low efficiency and effective capacity. To fill the research gap, we developed carbonaceous net-like adsorption films featuring multi-scale porous structures for efficient indoor formaldehyde removal. By optimizing the interfacial mass transfer and internal diffusion, we designed macro- to mesoscale meshes on the film surface and micro- to nano-scale pores within the materials, which were achieved by direct-ink-writing (DIW) printing and sacrificial template methods, respectively. Compared to unmodified planar films, the developed films exhibited a significant increase in the initial single-pass efficiency of formaldehyde from 68.1 % to 89.0 %, with the 8-hour effective adsorption capacity (EAC