How to Resize Images for Print: Free and Paid Tools – The Stackhouse

Most images do not need to be resized before you order. Start with your original file or highest-quality export. Choose the print size in the order tool, then review the crop and resolution guidance. If you do need a new file, the tools below can help you resize a copy. You do not need to buy software just to place a print order.

Check the pixels first

Pixel dimensions matter more than the DPI number saved in the file. A useful target for a detailed print is 300 pixels per inch at the final image size. For example, an 8 × 10 inch image needs about 2400 × 3000 pixels at 300 PPI after cropping. Some images can print well below that target, depending on the artwork, product, and viewing distance. See How to Check Your Image Resolution before deciding whether to resize.

Changing a file from 72 DPI to 300 DPI without adding pixels does not make it sharper. Enlarging a small image adds estimated pixels, not detail from the original. If a print size needs more detail, look for the original photo, scan, or artwork export first.

Free resizing tools

Preview on Mac

Preview is useful for a quick resize when you already have a print-ready image. Make a copy of the file first. Open the copy in Preview, choose Tools > Adjust Size, and keep Scale proportionally selected. If you need to reduce the actual pixel dimensions, select Resample image and enter the new width or height in pixels. Save the copy. See Apple's Preview instructions.

GIMP on Mac, Windows, or Linux

GIMP is a free editor with more control over image size. Get it from the official GIMP website. Open a copy, choose Image > Scale Image, keep the width and height linked, enter the desired pixel dimensions, and select Scale. Then use File > Export As to create a JPEG, PNG, or TIFF for upload. See the official GIMP scaling guide and export instructions.

Paid tools if you already use them

Adobe Photoshop

In Photoshop, open a copy and choose Image > Image Size. Keep width and height linked. Turn Resample off to check print size while preserving the existing pixels. Turn it on only when you intend to change the pixel dimensions, then save a separate print copy. Adobe explains the difference in its Image Size guide.

Adobe Lightroom Classic

In Lightroom Classic, select the photo and choose File > Export. In Image Sizing, leave Resize To Fit off to export at the available pixel dimensions. If you need a smaller file, turn it on and set the dimensions you need. Select Don't Enlarge so the export does not upscale a small source. See Adobe's export instructions.

Check the new file before ordering

Keep your original or editable master file. Upload the new copy, not the only version you have.
Check the exported pixel dimensions and make sure the image has not been stretched or cropped unexpectedly.
Export a JPEG, PNG, or TIFF in RGB with an embedded color profile when your app offers that option. See How to Prepare Your Image Files for Printing.
Upload the file, choose the print size, and review the crop and any resolution message before checkout.

If the order tool still warns that the image is too small, try a smaller print size, use more of the original image instead of a tight crop, or find a higher-resolution source file. You can also contact our team with the file's pixel dimensions and the print size you want.