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## What is the Offline Trace tool?

The Offline Trace tool lets you view and analyze trace sessions that were previously saved. A
saved trace session is essentially a "recording" of a trace session, and can be useful for cases
where troubleshooting and further analysis is required. The UI for the Offline Trace tool is
similar to the "live" Trace tool. To learn about the Trace Tool UI and on saving trace
sessions, see [Using the Trace tool](https://docs.apigee.com/api-platform/debug/using-trace-tool-0).

![An example of the Offline Trace tool showing transactions, trace session details, a
transaction map, phase details, view options, and more.](https://docs.apigee.com/static/api-platform/images/offline-trace.png)

## Downloading a trace session

To download a trace session:

1. Open the Trace Tool, as described in [Using the Trace tool](https://docs.apigee.com/api-platform/debug/using-trace-tool-0).
2. Perform a trace.
3. When the trace is completed, select **Download Trace Session**.

![The Download Trace Session button is circled.](https://docs.apigee.com/static/api-platform/images/download-trace-button-full.png)

The downloaded trace is stored in XML format.

## Accessing the Offline Trace tool


Access the Offline Trace tool, as described below.

### Edge

To access the Offline Trace tool using the Edge UI:

1. Sign in to [apigee.com/edge](https://apigee.com/edge).
2. Select **Develop \> Offline Trace** in the left navigation bar.

   ![Offline Trace tool menu item](https://docs.apigee.com/static/api-platform/images/offline-trace-menu.png)

### New Edge UI (Private Cloud)

> [!NOTE]
> **Note:** The New Edge UI is available with Edge for Private Cloud only.

To access the Offline Trace tool using the New Edge UI:

1. Sign in to the New Edge UI at `http://host:3001/edge`, where <var translate="no">host</var> is the IP address or DNS name of the host running the New Edge UI.
2. Select **Develop \> Offline Trace** in the left navigation bar.

   ![Offline Trace tool menu item](https://docs.apigee.com/static/api-platform/images/offline-trace-menu.png)

## Loading a trace file

In the Offline Trace tool, click **Choose File** and select a downloaded trace
file from your system.

![In the Offline Trace tool, the Choose file button is circled.](https://docs.apigee.com/static/api-platform/images/offline-trace-choose-2.png)