Since it's not mentioned anywhere in. The common space character is encoded as %20 as you noted yourself. If you look at rfc 3986 appendix a, you will see that space is simply not mentioned anywhere in the grammar for defining a url.
The % character is encoded as %25. As the aforementioned rfc does not include any reference of encoding spaces as +, i guess using %20 is the way to go today. @metabyter i think it is more technically correct to phrase the question as in a url, should i encode the spaces using %20 or + in the query part of a url? because while the example.
I am interested in knowing why '%20' is used as a space in urls, particularly why %20 was used and why we even need it in the first place. What is the difference and why should this happen? A bit of explaining as to what that %2520 is : 20 (unable to get local issuer certificate) asked 13 years, 5 months ago modified 1 year ago viewed 390k times