I like to use Photoshop or the free version called GIMP first to size up my photos to the final printed size to make the image as clear as I can (use the best resolution and largest size photo (3-4 MB is good enough) you can for best results).
To get the best quality engineer print, open the picture in Photoshop and go to “Image” and then “Image Size”. Your photo will probably be at 72 dpi, but we are going to slowly increase the resolution to 300 dpi so you’ll get a clearer print when you print it much bigger. Change your image resolution by slow increments of 10% at a time.
So if you start at 72 dpi, you’ll want to change it to 79, click “OK,” then change to 87, click “OK,” then 95, click “OK,” then 104, etc., until you reach 300 dpi. Once you have the correct photo resolution, you can resize the dimensions of the photo to its final size (most blueprints will print up to 36″ wide, so that’s what I sized mine to) in 10% increments as needed. Save the photo on a flash drive and take it to Staples to have it printed.
If you don’t have a photo editing program like Photoshop where you can resize the photo, you can still have it printed at whatever size you want at the store, it just may be a little more pixelated than if you resize it first.
Save the file onto a usb disk in using a pdf creator or jpg . I use 2 different usb sticks in case they cannot open the file in the shop.
Then go to the shop and print the image off to your desired size
Stuck for ideas ? Click HERE to go gets some pretty print images at good prices 🙂