nsid

A nsid is the Unique ID used by the Newgrounds website to identify each registered user account. The identifier is a numeric string that is automatically generated when a user creates an account and never changes, even if the user changes a username or other personal details.

The nsid appears in many places on the site. Register URLs that provide image thumbnails, such as avatar image request links, often contain the nsid as part of the path. In the Newgrounds API, queries that request user data return the nsid in the JSON response, allowing third‑party applications to retrieve and display information about a specific user. The nsid also shows up in the raw comments when viewing an article or a mashup, providing a way for moderators and addons to refer to posts without depending on the user's display name.

Because the nsid is purely numeric and tied only to the account, it offers a stable reference that is not affected by name changes or account merges. However, it is not intended to be a public key or a security token; it is a low‑risk identifier that can be shared openly with newgrounds utilities and is sometimes used in forums or support contexts to reference a user.

In summary, a nsid is a persistent, numeric identifier for a Newgrounds account, primarily used in URLs, the site’s API, and in moderation tools to locate and retrieve account information.