Wikibase should decode percent-encoded URLs in statements when displaying them, similar to what was done for the query service in T327514.

Browsers typically display an unencoded URL in the address bar but use the percent-encoded form when the copying URLs. Storing URLs unencoded can also be problematic, e.g. applying Unicode normalisation can break the URL, like reported in T206188.

But when a URL contains a lot of non-ASCII characters, it creates very long, unreadable URLs, which people understandably don't like and sometimes try to avoid.

Decoding them when displaying them would make them more readable while still being able to store them in the encoded form.

The example from T206188 (https://www.wikidata.org/w/index.php?oldid=756586516):

• Not encoded: https://www.ebanglalibrary.com/bangladictionary/অশোক-চট্টোপাধ্যায়/
• Encoded: https://www.ebanglalibrary.com/bangladictionary/%E0%A6%85%E0%A6%B6%E0%A7%8B%E0%A6%95-%E0%A6%9A%E0%A6%9F%E0%A7%8D%E0%A6%9F%E0%A7%8B%E0%A6%AA%E0%A6%BE%E0%A6%A7%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A7%9F/

How it currently appears:

How it appears after decoding the URL:

I used the following bit of code in the browser console to change the link text (I didn't check whether the decoded URL is valid UTF-8):

for (let e of document.querySelectorAll("a.external")) {
	if (e.textContent === e.href) {
		e.textContent = decodeURI(e.textContent);
	}
}