Uniform Resource Identifier Syntax
Every URL in your app, API, auth redirect, webhook, or deep link is built on this grammar. Essential for routing, redirects, and OAuth callback validation.
What It Defines
Defines the generic syntax for URIs: scheme, authority, path, query, fragment. Establishes absolute vs relative references, percent-encoding, normalization, and resolution rules.
Related References
The canonical publication point for finalized RFCs. If a protocol is standardized as an RFC, the RFC Editor text is the normative final reference. Published by the IETF, IRTF, IAB, and independent stream.
Related Specs
Browsers parse URLs per this standard, not raw RFC 3986. Critical for client-side routing, form encoding, and cross-origin behavior.
This is the core contract of every web API, browser request, and server response. You can't design or debug HTTP without knowing this.