Deep LOFAR 144 MHz images of the galaxy cluster MACS J0717+3745 at different resolutions (5″, top left; 10″, top right; 15″, bottom left; 20″, bottom right). The known diffuse emission sources–the large-scale halo and the chair-shaped relic–are well recovered by LOFAR at 144 MHz. The halo consists of the northern (H1) and southern (H2) regions. Contour levels are drawn at [1, 2, 4, 8, …] × 4.0σ_rms, where σ_rms, 5″ = 74 μJy beam⁻¹, σ_rms, 10″ = 90 μJy beam⁻¹, σ_rms, 15″ = 112 μJy beam⁻¹, and σ_rms, 25″ = 133 μJy beam⁻¹. In these images there is no region below −4σ_rms. The images are created with Briggs weighting and robust = −0.20. The beam sizes are indicated in the bottom left corner of the each image.