Files like images and PDF can be used for your SearchEngine Optimization (SEO) in a smart way and here is how you do it:
-
Name a file before you upload it to something related. If it is a picture of a swimmingpool on a house for sale; give it a file-name like swimmingpool-house1.jpg and a title like "Swimmingpool in front of the house". Here you get two keywords repeated two times: "swimmingpool" and "house".
-
In file names, use only English language characters (a-z) and numbers (0-9). You can also use - (hyphen) and _ (underscore). Do NOT use space or any other character as it is not supported by all browsers and operating systems.