We recommend uploading vector files in either .AI, .EPS, .PS, or .PDF. We also accept .JPEG, .JPG, .PNG, .GIF, .BMP, .TIFF, .TIF. Our design tool has a maximum upload of 25 MB. To upload a file, simply visit our design tool and click the upload image button and upload your compatible file. If your file is bigger than the 25 MB limit, please use a lower resolution image to place your order and then upload your higher resolution image through upload.signs.com. During this process you can leave a note in the “Customer Comments” field on the checkout page indicating you will be uploading a bigger file. Further, please indicate your order number when visiting upload.signs.com to send us your bigger file. By following this process you can complete your order now and we’ll make sure your flag uses your higher resolution file for a beautifully printed flag! To maintain a high quality print for your flag we recommend a minimum resolution of 100dpi for your file uploads.