Layers in a PDF sewing pattern let you show or hide each size before printing, so you print one or two sizes instead of a nest of ten overlapping outlines. You switch them in the Layers panel of a desktop PDF reader such as Adobe Acrobat Reader, keep the base layer with the text and markings on, and print at 100 %. Made-to-measure patterns such as Sewly's have no size layers, because the pattern is drafted in your measurements and has only one outline.
What are layers in a PDF sewing pattern?
A multi-size pattern draws every size on the same page, one inside the other, in what is called a nest. On paper, ten nested sizes make a thicket of lines that is hard to follow, especially where sizes cross at the armhole and the hip.
A layered PDF stores each size as a separate layer, like transparent sheets stacked on the page. The reader shows all of them by default. Hide eight, and the two you need stand out alone, with their notches and labels. A separate base layer carries what every size shares: the grainline, the piece names, the page numbers, the alignment marks and the test square.
Not every PDF pattern has layers. Older patterns, patterns exported from simple software and single-size patterns are flat: one layer, everything visible, nothing to switch.
How do you turn layers on and off?
In Adobe Acrobat Reader on a computer, which is the reader most patterns are tested in:
- Open the pattern and look for the layers icon in the left sidebar, a small stack of squares. If the sidebar is hidden, use View, then Show/Hide, then Navigation Panes, then Layers.
- Each layer has an eye icon. Click the eye to hide a size; click again to show it.
- Leave the base layer on. It is often named "Base", "Markings", "Text" or "All sizes".
- Print at 100 %, actual size, and check the first page before printing the rest. How to print a PDF sewing pattern covers the print dialog.
Other desktop readers handle layers too, with the panel in a different place. At the time of writing (October 2026), the PDF preview built into web browsers, the Preview app on a Mac and most phone apps either ignore layers or show them all and print them all, which is the most common reason a pattern "prints every size".
Tip: Hidden layers are not always excluded from printing. Some patterns set layers to print regardless of visibility. Check the print preview, and if it still shows every size, look for a "print visible layers" option or ask the reader to print as an image.
Which layers should stay on?
The base layer, always. Without it you get outlines with no piece names, no grainline, no notches and no page letters, which makes assembly a guessing game. If the pattern separates the test square or the page map onto their own layers, keep those on too.
A quick check after printing the first page: you should see the page's letter and number, part of a border or alignment mark, and the test square if it is on that page. If any is missing, a layer is off that should be on.
Why would you print more than one size?
Because bodies do not come in one size. If your bust falls in one size and your hip in another, keep both layers on and draw a line from one to the other between the waist and the hip. That is grading between sizes, and layers make it far easier, since only the two outlines you need are on the page.
The same goes for a child who is between sizes in height and width, or for a garment whose fit you are not sure of yet: print the two candidates, cut a toile in one, and have the other ready.
What if the PDF has no layers?
For a flat multi-size pattern, trace your size with a highlighter before cutting, or trace the piece onto pattern paper and leave the original intact. Pattern paper compared looks at the papers that work for tracing.
For a single-size pattern there is nothing to choose, and that includes made-to-measure patterns. A pattern drafted from your own measurements, or from one standard size, has one outline per piece and no size layers; what would be a layer in a nested pattern is instead an option, such as length, neckline or fit, that redraws the pattern before you download it. Grading between sizes is not needed because the bust, waist and hip are all yours; the usual toile check on shoulders and sleeves still applies.
Do layers work with a projector?
Yes, and they are especially useful there. Projector software that supports layers lets you switch sizes live over the fabric, so you can cut a front in one size and compare the next size on the same piece without printing anything. The projector sewing guide lists what the common apps support.
If your projector app does not read layers, open the file in a desktop reader first, hide the sizes you do not want, and save a flattened copy for projecting.
Do layers change the scale or the page count?
No. Hiding a size changes what is drawn, not the page size or the scale, so the test square is still the check that matters. The page count also stays the same, even though hiding sizes can leave some pages empty where only a large size reached. Use the page map on the cover to skip those pages in the print range; a well-made single-size pattern skips empty pages for you.
Common layer problems and their fixes
- Every size printed. You printed from a browser, a phone or a reader without layer support. Open the file in Adobe Acrobat Reader on a computer and hide the sizes there.
- Lines but no text, notches or page numbers. The base layer is off. Turn it back on.
- The Layers panel is empty or missing. The pattern has no layers. Highlight your size instead, or trace it.
- Sizes print even though they are hidden. The layers are set to always print. Print as an image, or save a copy with only your sizes visible and print that.
- A layer is named by a number you do not recognize. Check the size chart in the pattern's instructions; some makers name layers by bust measurement rather than by a size code.
For a full list of what else goes wrong between the file and the fabric, see PDF pattern printing mistakes.