> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://customix.crisp.help/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Asset Thumbnails

Asset thumbnails help merchants quickly identify images and folders inside the Assets library. Customix automatically generates thumbnails to make asset management faster and more intuitive. 

# Automatic Thumbnail Cropping
When you upload an image to Customix, the system will now automatically remove empty space and focus on the main object to generate the thumbnail.
This means:
* Transparent margins are removed
* The thumbnail is centered on the visible object
* Assets are easier to recognize in folders and lists
This behavior applies to all supported image formats.

![Automatic Thumbnail Cropping](https://storage.crisp.chat/users/helpdesk/website/-/b/3/c/1/b3c1fc6f21f6e800/image_wwrux3.png)
# Setting a Thumbnail for a Folder (ZIP Upload)
When uploading a ZIP file, you can now automatically assign a thumbnail to a folder.
Specifically, if a ZIP file contains an image named\*\*`+++.png`\*\* (or any supported image format)
Customix will:
* Use that file as the **thumbnail for the entire folder**
* Automatically remove the `+++` file after upload
* Keep only the remaining assets inside the folder

![+++ file will be used for the thumbnail of "Black" folder](https://storage.crisp.chat/users/helpdesk/website/-/b/3/c/1/b3c1fc6f21f6e800/image_vda0ca.png)
![The result](https://storage.crisp.chat/users/helpdesk/website/-/b/3/c/1/b3c1fc6f21f6e800/image_bqej8d.png)
# Color Thumbnail Generating 
When enabled, Customix automatically detects the dominant color of an asset and uses it as the **thumbnail**.
This is useful for displaying color-based assets such as color swatches or background options.

![Color thumbnail generating](https://storage.crisp.chat/users/helpdesk/website/-/b/3/c/1/b3c1fc6f21f6e800/image_18b0n8p.png)
### Notes
* Original image thumbnails are the default, you only need to edit if you want to change them.
* Thumbnails directly affect what customers see on the frontend option selector after you sync campaigns.
* Generate color thumbnails works for image files only.