> ## Documentation Index
> Fetch the complete documentation index at: https://cometchat-22654f5b-docs-llms-scoped-indexes.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-llms-scoped-indexes/-nSFFcS2LLIkMyn9/images/8d6e960d-stickers-7942a0da9cbc29036f79d55676f8bca4.png?fit=max&auto=format&n=-nSFFcS2LLIkMyn9&q=85&s=b47c8548b3db5f6ce1ae77925aaaf1d8" 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-llms-scoped-indexes/g_KAMkRj71rxDRMU/images/63897180-polls-916d9d0221d8d325a1bd3c80bcfdb70f.png?fit=max&auto=format&n=g_KAMkRj71rxDRMU&q=85&s=63de4f9e758ba15515f8774dfa933538" 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-llms-scoped-indexes/Fa6hxbnaPB6CCDby/images/0d8981b7-collaborative-whiteboard-5a8803d8e98749ed39851a34721ff094.png?fit=max&auto=format&n=Fa6hxbnaPB6CCDby&q=85&s=e8d32be5a4e6bdb4d71fd71e88a88c10" 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-llms-scoped-indexes/tnt3e6K0Qzy3Jll4/images/fb87a1db-collaborative-document-5e6df9a4ae2e74a9e7631df74b7971e4.png?fit=max&auto=format&n=tnt3e6K0Qzy3Jll4&q=85&s=e53526fa6e4c542d30a524cf7b70d8ec" 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-llms-scoped-indexes/tnRwSf4FQ-xb187R/images/6ee460cf-extension_message_reactions_screens-5aa0ea266fef6fdadadef80d0a707d62.png?fit=max&auto=format&n=tnRwSf4FQ-xb187R&q=85&s=a7eb7ae7e9fc8a041eca47e4e54b2aed" 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-llms-scoped-indexes/LUAnk4kNde8CLq7p/images/83dae8d1-translation-1e7ffc5b3c9f25a7a670485e9ca7e78e.png?fit=max&auto=format&n=LUAnk4kNde8CLq7p&q=85&s=c9d32f3a83286d9599e1102ce381732e" 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-llms-scoped-indexes/egNZF-iXldTS9vDi/images/bcbe2f2a-link-preview-a2bd03dce69ae5765847418b88ed849b.png?fit=max&auto=format&n=egNZF-iXldTS9vDi&q=85&s=6c1dd5e80640816a8b3501229589e135" 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-llms-scoped-indexes/L24pZ3kA23ulDaKk/images/29a4e7bb-thumbnail-96a3bb74abb716add7c27c0de539540c.png?fit=max&auto=format&n=L24pZ3kA23ulDaKk&q=85&s=aa0601d756ddd329032931fde9669dd8" 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-llms-scoped-indexes/egNZF-iXldTS9vDi/images/bed902e7-extension_profanity_filter_screens-15b99ab8c5a88b7dee28904ce087e4df.png?fit=max&auto=format&n=egNZF-iXldTS9vDi&q=85&s=6170c87e55b2a1d2cb1c725220303407" 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-llms-scoped-indexes/IswwmAgbm47WtdFq/images/cb60706e-extension_data_masking_screens-3c5363e1989e7e26cd7a3985590e84a4.png?fit=max&auto=format&n=IswwmAgbm47WtdFq&q=85&s=18857c38fd0c3ae0de7a541905bda820" 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-llms-scoped-indexes/tnRwSf4FQ-xb187R/images/72d11e6d-extension_image_moderation_screens-34da779e11f0d81d2cc6004273ca2d25.png?fit=max&auto=format&n=tnRwSf4FQ-xb187R&q=85&s=d97ea4d1e679f7dbd57e9d9754bd21cd" 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


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.