> ## Documentation Index
> Fetch the complete documentation index at: https://cometchat-22654f5b-docs-restapi-chatapi-eng-30216.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Extensions

> Enable powerful chat features with zero code using CometChat extensions

| Field           | Value                                                          |
| --------------- | -------------------------------------------------------------- |
| Dashboard setup | CometChat Dashboard → Extensions                               |
| 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 the **Extensions** section
3. Enable the extensions you want
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-restapi-chatapi-eng-30216/M4a5Qmojz--s8C2K/images/8d6e960d-stickers-7942a0da9cbc29036f79d55676f8bca4.png?fit=max&auto=format&n=M4a5Qmojz--s8C2K&q=85&s=867fb9101fd85ed2099528b24daaa869" 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-restapi-chatapi-eng-30216/IOfq-aIUi86MijbX/images/63897180-polls-916d9d0221d8d325a1bd3c80bcfdb70f.png?fit=max&auto=format&n=IOfq-aIUi86MijbX&q=85&s=8c4460da7db080c6f9700abaef0cc5d3" 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-restapi-chatapi-eng-30216/AAh1YGKzHGpE3g6R/images/0d8981b7-collaborative-whiteboard-5a8803d8e98749ed39851a34721ff094.png?fit=max&auto=format&n=AAh1YGKzHGpE3g6R&q=85&s=6fe7d6301186a80192e0c26b0131c405" 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-restapi-chatapi-eng-30216/MIHbrJ9Fdic3aw7O/images/fb87a1db-collaborative-document-5e6df9a4ae2e74a9e7631df74b7971e4.png?fit=max&auto=format&n=MIHbrJ9Fdic3aw7O&q=85&s=06ab93696b42a3a7443fb7b8a980b6a8" 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-restapi-chatapi-eng-30216/oPD2EDMZP7N8-hil/images/6ee460cf-extension_message_reactions_screens-5aa0ea266fef6fdadadef80d0a707d62.png?fit=max&auto=format&n=oPD2EDMZP7N8-hil&q=85&s=add327b759185633aa57cf345cb8fb55" 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-restapi-chatapi-eng-30216/B69IDh3Zv2wn_9pg/images/83dae8d1-translation-1e7ffc5b3c9f25a7a670485e9ca7e78e.png?fit=max&auto=format&n=B69IDh3Zv2wn_9pg&q=85&s=7e8c72d4cea7524f40df8f50d91482c0" 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-restapi-chatapi-eng-30216/RnBxlEHJxlANhA3X/images/bcbe2f2a-link-preview-a2bd03dce69ae5765847418b88ed849b.png?fit=max&auto=format&n=RnBxlEHJxlANhA3X&q=85&s=bbcc3e98274bea9216a8cda8c3756f42" 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-restapi-chatapi-eng-30216/CjwRO1133sVawoWZ/images/29a4e7bb-thumbnail-96a3bb74abb716add7c27c0de539540c.png?fit=max&auto=format&n=CjwRO1133sVawoWZ&q=85&s=8129d9e5c70d4e7b70f9270cae2e52bc" 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-restapi-chatapi-eng-30216/RnBxlEHJxlANhA3X/images/bed902e7-extension_profanity_filter_screens-15b99ab8c5a88b7dee28904ce087e4df.png?fit=max&auto=format&n=RnBxlEHJxlANhA3X&q=85&s=11cdd8d3b91f4b264484604c432e140c" 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](/moderation/legacy-extensions) |

### Data Masking

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

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-restapi-chatapi-eng-30216/xEKCTpl8aK1tV8Iy/images/cb60706e-extension_data_masking_screens-3c5363e1989e7e26cd7a3985590e84a4.png?fit=max&auto=format&n=xEKCTpl8aK1tV8Iy&q=85&s=0e1d680d77b17b3673923aca71ff8080" 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](/moderation/legacy-extensions) |

### Image Moderation

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

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-restapi-chatapi-eng-30216/8YcETMm0YFSRjCU7/images/72d11e6d-extension_image_moderation_screens-34da779e11f0d81d2cc6004273ca2d25.png?fit=max&auto=format&n=8YcETMm0YFSRjCU7&q=85&s=bce74c72c2717a8aa31831a4f83eea2f" 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](/moderation/legacy-extensions) |

## 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