> ## Documentation Index
> Fetch the complete documentation index at: https://cometchat-22654f5b-docs-agent-native-development.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Extensions

> Enable CometChat iOS UI Kit extensions for stickers, polls, collaboration tools, reactions, moderation, smart replies, and link previews.

| Field | Value |
| - | - |
| Dashboard setup | CometChat Dashboard → Chat & Messaging → Features |
| Activation | Enable in dashboard, features appear automatically in UI Kit |
| Code required | None — extensions work out of the box |
| Platforms | Works across iOS, Android, and Web with the same configuration |

Extensions add powerful features to your chat app without writing any code. Simply enable them in your [CometChat Dashboard](https://app.cometchat.com), and they automatically appear in the UI Kit components.

## How Extensions Work

1. Log in to your [CometChat Dashboard](https://app.cometchat.com)
2. Navigate to **Chat & Messaging** → **Features**
3. Enable the extensions you want from the **Extensions** section
4. The features automatically appear in your app after initialization

<Note>
  Extensions are enabled at the dashboard level. Once activated, they work across all platforms (iOS, Android, Web) using the same CometChat app.
</Note>

## Composer Extensions

These extensions add new options to the [Message Composer](/ui-kit/ios/message-composer) attachment menu or action sheet.

### Stickers

Let users express emotions with fun, pre-designed stickers.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/o6_jwBoLsrhv9wxF/images/8d6e960d-stickers-7942a0da9cbc29036f79d55676f8bca4.png?fit=max&auto=format&n=o6_jwBoLsrhv9wxF&q=85&s=10e8a6ffa57c813c7dd810eaf8a539e3" width="1440" height="833" data-path="images/8d6e960d-stickers-7942a0da9cbc29036f79d55676f8bca4.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message Composer](/ui-kit/ios/message-composer) | [Sticker Extension](/fundamentals/stickers) |

### Polls

Create polls to gather opinions in group chats quickly.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/R_bTXRyKtWjcqfzr/images/63897180-polls-916d9d0221d8d325a1bd3c80bcfdb70f.png?fit=max&auto=format&n=R_bTXRyKtWjcqfzr&q=85&s=3b388dd465b376a4d6b2d4ed5659d272" width="1440" height="833" data-path="images/63897180-polls-916d9d0221d8d325a1bd3c80bcfdb70f.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message Composer](/ui-kit/ios/message-composer) | [Polls Extension](/fundamentals/polls) |

### Collaborative Whiteboard

Real-time whiteboard for drawing, brainstorming, and sharing ideas together.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/Dk0e4FvZPiXwckBA/images/0d8981b7-collaborative-whiteboard-5a8803d8e98749ed39851a34721ff094.png?fit=max&auto=format&n=Dk0e4FvZPiXwckBA&q=85&s=733c886a491ef5e2305d5cf54f26d608" width="1440" height="833" data-path="images/0d8981b7-collaborative-whiteboard-5a8803d8e98749ed39851a34721ff094.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message Composer](/ui-kit/ios/message-composer) | [Collaborative Whiteboard](/fundamentals/collaborative-whiteboard) |

### Collaborative Document

Work together on shared documents in real-time with other users.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/6eR_gFeN8DXfGhGn/images/fb87a1db-collaborative-document-5e6df9a4ae2e74a9e7631df74b7971e4.png?fit=max&auto=format&n=6eR_gFeN8DXfGhGn&q=85&s=d7fa146c3030df6819253eef2a55ca7f" width="1440" height="833" data-path="images/fb87a1db-collaborative-document-5e6df9a4ae2e74a9e7631df74b7971e4.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message Composer](/ui-kit/ios/message-composer) | [Collaborative Document](/fundamentals/collaborative-document) |

### Smart Replies

AI-powered suggested responses for faster, more efficient conversations.

| Component | Setup Guide |
| - | - |
| [Message Composer](/ui-kit/ios/message-composer) | [Smart Replies](/fundamentals/smart-replies) |

## Message List Extensions

These extensions enhance messages displayed in the [Message List](/ui-kit/ios/message-list).

### Message Reactions

Let users react to messages with a range of emojis for quick responses.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/4agHBYIOjQq-K9KU/images/6ee460cf-extension_message_reactions_screens-5aa0ea266fef6fdadadef80d0a707d62.png?fit=max&auto=format&n=4agHBYIOjQq-K9KU&q=85&s=c87ad45f7b87675e7520b0807fea7ee2" width="4948" height="3120" data-path="images/6ee460cf-extension_message_reactions_screens-5aa0ea266fef6fdadadef80d0a707d62.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message List](/ui-kit/ios/message-list) | [Reactions Extension](/fundamentals/reactions) |

### Message Translation

Translate messages into any language instantly, eliminating language barriers.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/xl-X6qUWkdH6FtQ-/images/83dae8d1-translation-1e7ffc5b3c9f25a7a670485e9ca7e78e.png?fit=max&auto=format&n=xl-X6qUWkdH6FtQ-&q=85&s=0f7a153d94ba3b4318828192bb1fbb46" width="1440" height="833" data-path="images/83dae8d1-translation-1e7ffc5b3c9f25a7a670485e9ca7e78e.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message List](/ui-kit/ios/message-list) | [Message Translation](/fundamentals/message-translation) |

### Link Preview

Show rich previews for URLs shared in chat including title, description, and thumbnail.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/0q510FF8T7a7_01K/images/bcbe2f2a-link-preview-a2bd03dce69ae5765847418b88ed849b.png?fit=max&auto=format&n=0q510FF8T7a7_01K&q=85&s=9679ebb555330589b9e3ae12d42d5504" width="1440" height="833" data-path="images/bcbe2f2a-link-preview-a2bd03dce69ae5765847418b88ed849b.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message List](/ui-kit/ios/message-list) | [Link Preview](/fundamentals/link-preview) |

### Thumbnail Generation

Automatically create smaller preview images for faster loading and reduced bandwidth.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/pxaw3CU3ww5jOcRj/images/29a4e7bb-thumbnail-96a3bb74abb716add7c27c0de539540c.png?fit=max&auto=format&n=pxaw3CU3ww5jOcRj&q=85&s=47f3966e2b477cf746f98163cdd666d1" width="1440" height="833" data-path="images/29a4e7bb-thumbnail-96a3bb74abb716add7c27c0de539540c.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message List](/ui-kit/ios/message-list) | [Thumbnail Generation](/fundamentals/thumbnail-generation) |

## Moderation Extensions

These extensions help maintain a safe chat environment by filtering content automatically.

### Profanity Filter

Automatically censor inappropriate and obscene words in messages.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/0q510FF8T7a7_01K/images/bed902e7-extension_profanity_filter_screens-15b99ab8c5a88b7dee28904ce087e4df.png?fit=max&auto=format&n=0q510FF8T7a7_01K&q=85&s=569e744226c3315f9fd657171da7aa03" width="4948" height="3120" data-path="images/bed902e7-extension_profanity_filter_screens-15b99ab8c5a88b7dee28904ce087e4df.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message List](/ui-kit/ios/message-list) | [Legacy Extensions](https://assets.cometchat.io/legacy-docs/moderation/legacy-extensions.html) |

### Data Masking

Automatically mask sensitive data like credit card numbers and phone numbers.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/SkICtQbidhdDKkU0/images/cb60706e-extension_data_masking_screens-3c5363e1989e7e26cd7a3985590e84a4.png?fit=max&auto=format&n=SkICtQbidhdDKkU0&q=85&s=5e1af7862deca839b7efd3c2ce9f37e4" width="4948" height="3120" data-path="images/cb60706e-extension_data_masking_screens-3c5363e1989e7e26cd7a3985590e84a4.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message List](/ui-kit/ios/message-list) | [Legacy Extensions](https://assets.cometchat.io/legacy-docs/moderation/legacy-extensions.html) |

### Image Moderation

Detect and filter inappropriate or explicit images using AI/ML.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-agent-native-development/4agHBYIOjQq-K9KU/images/72d11e6d-extension_image_moderation_screens-34da779e11f0d81d2cc6004273ca2d25.png?fit=max&auto=format&n=4agHBYIOjQq-K9KU&q=85&s=c2a45fc10c99a22d4a6d81f35482fd9a" width="4948" height="3122" data-path="images/72d11e6d-extension_image_moderation_screens-34da779e11f0d81d2cc6004273ca2d25.png" />
</Frame>

| Component | Setup Guide |
| - | - |
| [Message List](/ui-kit/ios/message-list) | [Legacy Extensions](https://assets.cometchat.io/legacy-docs/moderation/legacy-extensions.html) |

## Extensions Summary

| Extension | Category | Component | Use Case |
| - | - | - | - |
| Stickers | Composer | Message Composer | Fun expression |
| Polls | Composer | Message Composer | Group decisions |
| Whiteboard | Composer | Message Composer | Visual collaboration |
| Document | Composer | Message Composer | Document collaboration |
| Smart Replies | Composer | Message Composer | Quick responses |
| Reactions | Message List | Message List | Quick responses |
| Translation | Message List | Message List | Multi-language support |
| Link Preview | Message List | Message List | Rich URL previews |
| Thumbnails | Message List | Message List | Faster loading |
| Profanity Filter | Moderation | Message List | Content moderation |
| Data Masking | Moderation | Message List | Privacy protection |
| Image Moderation | Moderation | Message List | Safe content |

## Next Steps

* [Extensions Overview](/fundamentals/extensions-overview) — Full extension documentation
* [Moderation](/moderation/overview) — Content moderation features
* [Message Composer](/ui-kit/ios/message-composer) — Where composer extensions appear
* [Message List](/ui-kit/ios/message-list) — Where message extensions appear


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