
If you have a Microsoft Windows programme then you will have PAINT

Click on.. Start, All Programmes, Accessories, PAINT
Then in paint you need to click on FILE - OPEN - this will take you to browse through you computer files - Double click on the picture you want to change
Then click on IMAGE - Stretch/Skew - then you can use the horizontal and vertical resizers. Click on Image - Attributes to check on the size - cms, inches, or pixels
Hope this helps
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