> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.carbone.io/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).

# What is a Carbone tag?

# What is a Carbone tag?

Carbone tags are placeholders `{d.}` within the document template. The carbone engine recognizes tags and replaces with real data when generating reports. These tags are used to bind data from a JSON source to specific locations in the template, enabling the creation of personalized and data-driven documents. The "JSON data" can be a word, a sentence, a number, a date, image, barcode, charts, colors and more!

A Carbone tag is also named "marker" or "placeholder".

## Example of Carbone tag

#### JSON Data
```json
{
  "firstname": "John",
  "lastname": "Doe"
}
```

#### Template
```
Hello {d.firstname} {d.lastname} !
```

#### Result
```
Hello John Doe !
```