What is the most reliable link shortener?

Question

Link Shortening

The goal is to shorten the long name of the site for the subsequent generation of the QR code, so that it is small and well recognizable. Naturally, it is highly undesirable for such a service to quickly fail in a couple of years, taking both the link and the QR code with it. What services for creating a short link in this regard are the most reliable?

Answer 1

probably those who live the longest already

Answer 2

Reliability and 'third party service' are incompatible, especially if you add 'free' to the requirement.
Only your own service can provide the required level of guarantee, because it is determined by you.
ps why do you need a link shortener when you can use your own mysite.com/2

on your site, the size of the qr-code will practically not differ from any other shortener, a couple of three characters will not solve

Answer 3

What services for creating a short link in this regard are the most reliable?

If you are not satisfied with dozens of existing ones, including those that have been working for a dozen years, you will have to make your own.
Well, or encode the link that you need without abbreviation - QR contains quite a lot.