@ajb2k3 Had the same question and here the answer: jpeg_div_t scale = JPEG_DIV_2; // JPEG_DIV_NONE, --> no scale // JPEG_DIV_2, --> half the size // JPEG_DIV_4, // JPEG_DIV_8, // JPEG_DIV_MAX M5.Lcd.drawJpgFile(SD, filename.c_str(), 0, 0, 320, 240, 0,0, scale);

Hello @jterrell not sure if this documentation contains all M5Paper Arduino functions, but it is a start. Thanks Felix