Square canvas prints at 9x9 inches printed at 300 DPI require a source file at exactly 2700x2700 pixels. That specific print size sits between the more common 8x8 and 10x10 square options and print services that offer it as a product will reject or flag source files that do not meet the pixel requirement. Photographers preparing prints for sale, designers building files for square canvas products and artists supplying work to print fulfillment services that include this size in their catalog all need to hit this exact number.
How to Resize an Image to 2700x2700
Enter 2700 in both the width and height fields. Before processing, turn the Maintain Aspect Ratio checkbox off for a forced square output. With a landscape or portrait original and the checkbox left on, the output will follow the original proportions and not produce a clean square.
Starting from the highest resolution version of the image available is more important at this size than at smaller dimensions. A source file that is already close to 2700x2700 scaled down slightly will look sharp. A small image upscaled to this size will not produce a result suitable for print.
Batch processing a set of print files works the same way. Upload everything at once and download as a ZIP when done.
Common Uses for 2700x2700 Images
9x9 inch square canvas prints are the primary use case. Print services offering this size as a product require source files at 300 DPI which maps directly to 2700x2700 pixels. Photographers selling prints through their own website or a print fulfillment service that includes this canvas size need to prepare files at this exact resolution.
Square photo books that include full bleed pages at 9x9 inches also require source images at this pixel count. Print on demand platforms with a 9-inch square product in their catalog specify this dimension in their upload guidelines.
Output Format at This Size
PNG preserves full detail for digital art and illustrated content at this resolution. JPEG is the more practical choice for photographic print files where managing the file size matters for upload speed and storage. Most print services that accept this size will work with either format, so matching the format to the content is the main consideration.