He studied at the École nationale supérieure des Beaux-Arts (National School of Fine Art) in Paris.
Daniel du Janerand exhibited in France, and internationally in the USA, Great Britain, Belgium, Germany, Switzerland, Canada, Mexico, Italy, Spain, Russia, and Japan.
His work is in museum collections in Fontainebleau, Lyon, Poitiers, Valenciennes, Villeneuve sur Lot, Créon, Gassin, and Saint-Maur des Fossés.
In February 1991, doing homage to Daniel du Janerand, his colleague and close friend Maurice Boitel wrote in the catalogue of the exhibition for the centenary of the Fine Arts National Society: "...Daniel du Janerand left some unfinished pictures among which one on his easel: last testimony.
Until the last day, he was painting, going more and more to a very sober expression, more and more to the essential of his deepest feelings: his wonderful pastels, drawn from life, still remain as witnesses of his spontaneous inspiration and vigour magnified on the canvas; these finished works impart to you an optimism I often admired: optimism he kept even during his health ordeals; his dynamism, his hope, helped by a great talent, led to a world always better; a paradisiacal light illuminates the spectator.