What paper weight means and why it matters
Paper weight affects how your photobook feels in hand and how your images look on the page.
By the Studio5 min read
Pick up a cheap brochure and a beautiful art book and you will feel the difference before you see a single image. Much of that difference is paper weight. It shapes how pages turn, how photos look and how substantial the book feels in your hands.
What does GSM mean?
GSM stands for grams per square metre. It measures how much a sheet of paper weighs at a standard size, which is a good indicator of how thick and stiff it is. Everyday office paper is around 80 GSM. Magazine pages are often lighter or similar. Photobook pages usually sit somewhere between about 150 and 250 GSM, and covers are heavier still.
Is heavier paper always better?
Not always. Heavier paper feels more premium, resists bending and reduces show-through, where images on the next page faintly appear behind the current one. But very heavy pages make a book thicker, stiffer and harder to turn, especially in books with many pages. The right weight depends on the type of book.
Which paper weight suits which book?
- Magazines and zines. Lighter paper feels authentic and keeps the book flexible.
- Everyday photobooks. A medium weight balances feel and page count.
- Weddings and heirlooms. Heavier paper feels substantial and lasts for decades.
- Lay-flat books. Pages are often much thicker by design, almost like card.
What is show-through?
Show-through happens when ink on one side of a page is faintly visible from the other side. It is more noticeable on thin, uncoated paper and with dark, full bleed images. Heavier and coated papers reduce it. If your book has many dark photos, a slightly heavier paper is worth it.
Does paper weight affect colour?
Weight itself has less effect on colour than finish does. Coated papers, such as silk, keep ink on the surface for sharper detail and richer colour. Uncoated papers absorb a little ink, which softens colour and contrast. Weight and finish work together to create the overall feel.
Feel matters as much as looks
People judge quality through their fingertips. A page that is pleasantly thick and smooth makes the whole book feel valuable, which makes people more careful with it and more likely to keep it. That feeling is a big part of why printed books are treasured.
How to choose
If you are unsure, start with a medium weight and a matte or silk finish. It suits almost every kind of photobook. Reserve the heaviest options for books you expect to be handled a lot and kept for a very long time.
