Why is Frans Hals’s painting technique compared with Impressionism?

Frans Hals’s painting technique is compared to Impressionism primarily due to the looseness of his brushwork.12

Unlike most 17th-century painters who worked slowly with preparatory drawings and elaborate finishes, Hals often painted directly onto the canvas with quick, spontaneous strokes. This technique, which he continued to develop with increasing freedom throughout his life, utilized bright colors to suggest rather than strictly enclose forms. These expressive, bravura brushstrokes were highly effective at conveying movement and the vitality of his subjects, creating a sense of striking immediacy that resonated with later generations of artists, particularly the Impressionists.213