# Diff

### 1. What's it?

During using Proxyman, you might face the situation to find the difference between requests and responses. The Diff tool would help you to:

* Diff two Requests or Response, include the URL, Method, Status Code, Headers, and the Text-based body.
* Render as Side-by-Side or Unified.
* Light and Dark Theme.
* Export as a unified file.
* Open the diff by 3rd-party applications, such as FileMerge.
* Highlight and add comments.

{% hint style="info" %}
This feature is only available for macOS 11.2 and later.
{% endhint %}

### 2. How to use it?

1. Select your requests on the main table view.
2. Right-Click -> Tools -> Add to Diff pool (Or using ⌘Y)
3. On the Diff window, select Left and Right Panel.
4. Proxyman performs the diff operation and displays it.

#### Side-by-Side mode

![Side By Side Mode](https://1856518738-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LlPt_6BePnJ3oK3saP1%2Fuploads%2F8EScHubheb71QvKA8L0A%2FScreen%20Shot%202022-03-27%20at%2009.30.03.png?alt=media\&token=e824bef6-f357-46c6-986e-a874f5f16e76)

#### Unified Mode

![Unified Mode](https://1856518738-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LlPt_6BePnJ3oK3saP1%2Fuploads%2Fnnud51Dmklg6gNuUYFY5%2FScreen%20Shot%202022-03-27%20at%2009.31.53.png?alt=media\&token=d85f3fd1-1517-4fb6-8097-d00fcdf8d08c)

### 3. Open with 3rd-party diff tools

* File Merge: Required Xcode to install
* Kaleidoscope: You have to install the `ksdiff` in the Kaleidoscope's preference.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.proxyman.com/advanced-features/diff.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.