Web Architecture6 min read
Understanding Query Strings, UTM Parameters, and URL Encoding
How web applications pass state, capture campaign analytics, and safely escape URI characters.
Written by Emily N.
•Published August 8, 2026
Target Keyword: url encoding guide / parse query string parameters
Every time you click a shared web link, search on Google, or open a email newsletter, the URL in your browser address bar carries key-value state parameters in its query string.
The 5 Standard UTM Analytics Parameters
utm_source: Identifies the referral traffic source (e.g.,google,newsletter).utm_medium: Identifies the marketing channel (e.g.,cpc,email,social).utm_campaign: Identifies the individual promotion or campaign name.utm_content: Differentiates ad creative variations or links pointing to the same destination.utm_term: Tracks specific paid search keywords.
Parse, Edit & Encode URL Parameters
Extract UTM campaign keys, add or remove query parameters visually, and perform percent-encoding with our interactive URL Parameter Parser & Encoder.