Learn
Glossary
Short, plain-English definitions of the terms behind links, QR codes, tracking and online privacy.
URL shortenerA URL shortener turns a long web address into a compact link that redirects to the original. Shorteners save …301 vs 302 redirectA 301 redirect is permanent: it tells browsers and search engines the destination has moved for good, and it …UTM parametersUTM parameters are tags added to a URL (utm_source, utm_medium, utm_campaign, utm_term, utm_content) that tel…Vanity URLA vanity URL is a short, human-readable custom link — like urlik.xyz/sale — chosen instead of a random code. …QR codeA QR code is a two-dimensional barcode a phone camera can scan to open a link, join WiFi, save a contact or m…Link in bioA link-in-bio page collects all your important links behind a single URL — ideal for social profiles that all…Disposable emailA disposable (temporary) email is a throwaway inbox used to sign up or receive a one-time code without exposi…End-to-end encryptionEnd-to-end (E2E) encryption scrambles data on the sender's device so only the recipient can decrypt it — the …Click-through rate (CTR)Click-through rate is the share of people who click a link out of everyone who saw it, written as a percentag…Deep linkA deep link points to a specific place inside an app or site rather than its home screen — for example straig…Branded linkA branded link uses your own recognizable domain or a custom alias instead of a generic shortener, so recipie…Open Graph (social preview)Open Graph tags control the title, description and image shown when a link is shared on social networks and m…REST APIA REST API lets software create and read data over HTTP using predictable URLs and JSON. For a link platform …Link rotLink rot is the slow decay of the web as URLs change or disappear, breaking links that once worked. A shorten…Phishing linkA phishing link imitates a trusted site to steal credentials or money, often hidden behind a shortener. Reput…A/B testing (link rotation)A/B testing sends visitors to different destinations in a set ratio to see which performs better. With weight…