This20%is20%my20%file20%name.
Difficult to read? It may be your fault.
You will have been frustrated at times when you come across a URI that just doesn’t work. We add to our woes by putting spaces into file and folder names. Once added, failures will happen when the browser or file manager interprets this information incorrectly.
A good file name will follow a simple policy. Use underscores and hyphens between words and don’t use any spaces or other characters. The same should be used in the creation of folders. As an example, [My Files] would be better displayed as [My_Files]. The use of an underscore ensures no spaces are used. An improvement on this is to use Camel Case (often written descriptively as camelCase). The example would then be [myFiles]. The advantage to this is fewer characters. One fewer may not seem like much but it can make all the difference in a long string.
In ASCII, a space is converted to 20% and so you will come across file names that look a complete mess e.g. This20%is20%my20%file20%name. As well as spaces, any other non-alpha character you use will be converted. A forward oblique stroke / is %2f.
If you come across a completely messed up URI, you can try to decode this using a tool such as https://www.urldecoder.org/
For your pub quiz knowledge, the correct term is URI and not URL. The I is for indicator and L is for location. The common use is URL, even if the URI above this is used. The use of URL/URI is explained, in part, within the text of the site.
p.s. If you are working in WordPress or similar, this file name will be converted automatically from ‘File names and the Internet’ to …’/file-names-and-the-internet/‘