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Can someone explain to me the following behavior:

When I copy a specific URL from Firefox and paste it to Notepad++ (or Stack Overlow) some parameters changed. I can't post the orginial URL but it's something like this:

In address bar: 

https://xxx.xxx-xxxx.de/xxxxx//xxxxx?project=xxxxl&query=xxxx&keyname=OBJNAME&keyvalue=05-(G)28-01-008

But Notepad++ and Stack Overflow shows me this:

https://xxx.xxx-xxxx.de/xxxxx//xxxxx?project=xxxx&query=xxxxx&keyname=OBJNAME&keyvalue=05%2D%28G%2928%2D01%2D008
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1 Answers1

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This URI is percent-encoded.

See the URI standard: Percent-Encoding. There are various reasons why something could be percent-encoded (sometimes it’s required, sometimes optional; sometimes it changes the meaning, sometimes not).

Some browsers display the URL after decoding the percent-encoded parts. This is typically done for usability reasons: it’s nicer to see https://en.wikipedia.org/wiki/Ö instead of https://en.wikipedia.org/wiki/%C3%96.

Copy-pasting the URL from the address bar to some other place is one way to see the actual URL (with percent-encoding).

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