Lifecycle guide for System.Text.Json from Microsoft

All releases, patches, maintenance and support periods at a glance

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📅 Last update on 2026-03-09

What is System.Text.Json?

Automate product release and end-of-life management

Provides high-performance and low-allocating types that serialize objects to JavaScript Object Notation (JSON) text and deserialize JSON text to objects, with UTF-8 support built-in. Also provides types to read and write JSON text encoded as UTF-8, and to create an in-memory document object model (DOM), that is read-only, for random access of the JSON elements within a structured view of the data. The System.Text.Json library is built-in as part of the shared framework in .NET Runtime. The package can be installed when you need to use it in other target frameworks.

The entire lifecycle of System.Text.Json

The following figure shows you the visualised product life cycle of System.Text.Json. You can see all releases with the latest patch version, the long-term support characteristics (orange flag in the green circle, the periods for version provision, maintenance and support.