With modern digital cameras and scanners now able to produce image files at a very high resolution, not to mention the widespread availability of some gorgeous images for free download, sometimes it's nice to be able to print out your own large-format posters. But if your printer is limited to A4 or letter size paper, which is around 8 by 12 inches, you'll need to use some special software in order to turn the large image into a series of tiled pages.
One of the best methods that I've discovered recently is to use 2 separate steps. First, a free online service that splits an image file into a number of separate images, each in its own file. Next, the built-in ability of Windows to easily print an image in good quality, right up to the edge of the paper, with no additional software required. Here's how to do it.
First, find your large-format image file and then head to http://www.imagesplitter.net in your web browser. Upload your image, choose the option to split it, and decide how many parts you want it to be split into. For best results, don't change the aspect ratio of your image. For example, if the site says that the image takes up 3 sheets by 2, calculate your required enlargement by multiplying both of those numbers by the same factor. So 6 by 4 is good, as is 9 by 6, but not 9 by 7.
When the site has worked its magic on your file, you'll have a zip file to download that contains the constituent parts of your poster. Download the file, unzip it, and then just right-click on each image and choose Preview. Then click on the print option, choose Full Page Photo, and the job is done. All that's left is to find a large enough space on your wall for the finished work.
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