Plain-English explanations of the terms you'll run into when shortening links, generating QR codes, and tracking campaigns.
Most jargon in this field is harmless — you can ignore it and still get your links working. A handful of terms are different, because misunderstanding them leads to a decision you cannot easily undo. Those are the ones worth reading properly before you commit to anything printed, purchased, or published.
Two stand out. The static versus dynamic QR code distinction determines whether a code you have already printed can ever point somewhere else — get it wrong on ten thousand menus and the only fix is a reprint. The 301 versus 302 redirect distinction determines whether search engines transfer authority from an old URL to a new one, or treat the move as temporary and keep the old address indexed. Both are one-line decisions with multi-year consequences.
The rest of the entries below cover the vocabulary that shows up in analytics reports and pricing pages: UTM parameters for attributing traffic to a campaign, error correction for why a code still scans with a logo covering part of it, link rot for what happens to links over time, and country-code domains for why so many shorteners use domains like .gg and .ly. Each entry is a page in its own right rather than a one-line definition.
Definitions are a starting point rather than an answer. Once a term is clear, the how-to guides turn it into steps — how to actually tag a campaign, configure a branded domain, or set up deep linking — and the use-case guides show the same ideas applied to a specific piece of print or a specific kind of profile.
If you are comparing platforms rather than learning the vocabulary, the comparison pages apply these terms across the main tools, so you can see which of them actually support dynamic codes, custom domains, or app deep links rather than just listing the words on a feature page.