Firefox 同步

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Sync refers to a family of related components and services which provide synchronization of data between Mozilla application instances. These components and services include:

Firefox 同步客户端
The Sync client bundled with Mozilla products. It exists as a core JavaScript module providing generic functionality and UI components for each product.
A server implementation of the Sync HTTP protocol. Clients communicate through it.
Firefox Home
An iOS application that functions as a Sync client.
Mozilla 服务器实例
An instance of the server deployed and maintained by Mozilla. If you use Sync in your browser, this is what it talks to by default.


There are numerous specifications concerning Sync. These include:

  • An HTTP API for client-server interaction
  • Storage formats used by the the clients
  • Cryptographic model for encrypting client data

The definitive source for these specifications is


It is possible to run your own Sync Server instance. Full instructions are available at


For information on the current development status of Sync including how to get involved, see