Gerstaecker is an online retailer of art and creative supplies, serving artists, students and hobbyists with a wide-ranging catalogue of materials and equipment. Its selection covers major painting media, including acrylic, oil, watercolour, gouache, tempera, ink and pastel, alongside pigments, mediums, varnishes and other painting aids. Customers can also find brushes for different techniques, canvases and other painting surfaces, specialist papers, sketchbooks and drawing materials such as pencils, markers, charcoal and pastels.

The range extends beyond painting and drawing to airbrush equipment, printmaking supplies, calligraphy, bookbinding, model-making, ceramics, sculpting, framing and creative crafts. Gerstaecker also offers easels, palettes, storage cases, transport bags and presentation materials, as well as art books, DVDs, gift sets and accessories for maintaining brushes and tools. The website features product categories, brands, new arrivals and special offers, with practical resources including a blog, newsletter, workshops, gift vouchers and store information. Gerstaecker presents itself as a convenient destination for ordering art supplies online, highlighting competitive prices and fast delivery.