Blog
Guides to short links, QR codes and keeping links working, from the maker of ndle.
UTM parameters, explained: what each one does
What utm_source, utm_medium, utm_campaign and the rest record, how to name them so reports stay clean, and where to use them. With a free UTM builder.
Do QR codes expire? Static vs dynamic, explained
A QR code can't expire, but the link inside it can. How static and dynamic codes differ, when dynamic ones stop working, and how to make one that lasts.
How to shorten a link without an account
Shorten a link with no sign-up, no email and no card. What a guest link gives you, what it doesn't, and when a free account is worth making instead.
How to check if a link is working, step by step
Clicking a link only proves it works for you, now. How to test it like a reader, read its status code, follow redirects and catch pages that fail quietly.
What is link rot, and how do you slow it down?
38% of webpages from 2013 were gone a decade later. What link rot is, how common it is, why short links rot twice, and how to keep your links working.
Do short links expire? Bitly, TinyURL and goo.gl compared
Most short links don't expire by default, but they last only as long as the service, your account and the page behind them. What each shortener promises.
Why is my Bitly link not working? Causes and fixes
A Bitly link can fail at the link, at Bitly, or at the page it opens. How to tell which, from typos and warning pages to custom domains and blocked texts.
Bitly's free plan in 2026: limits, ads and free alternatives
Bitly's free plan gives you 5 links and 2 QR codes a month, with an ad page on every link. What it includes, what paid adds, and the free alternatives.
QR code stopped working? Check the destination first
Most QR codes that stop working aren't damaged: the link behind them broke. Find which part failed, fix a printed code, and keep the next one working.