GSM (Paper Weight)
GSM stands for grams per square meter, a measure of paper weight where higher numbers mean thicker, more substantial paper.
GSM (grams per square meter) is the international standard for measuring paper weight. A regular sheet of office paper is around 80 gsm. Fine-art paper typically ranges from 180 gsm (lighter weight) to 310 gsm or higher (museum-grade cotton rag).
Heavier paper feels more substantial in the hand, resists curling and warping, and generally signals higher quality. For fine-art prints we recommend 275 gsm minimum, with 300–310 gsm being the sweet spot for framed wall art.
GSM alone doesn't tell you about paper quality — a 300 gsm dye-coated photo paper is still a lower-grade product than a 285 gsm cotton rag. But within comparable paper types, heavier is generally better.
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