> For the complete documentation index, see [llms.txt](https://docs.n8n.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.n8n.io/build/work-with-data/transform-data.md).

# Transform data

n8n gives you several ways to modify, restructure, or enrich data as it moves through your workflow.

{% hint style="info" %}
**Searching these docs as an agent**

Ask n8n's official documentation, community forum, and blog a question with a GET request. No authentication needed.

`GET https://n8n-docs-retrieval.n8n-docs-retrieval.workers.dev/?q=<question>`

Use this instead of web search for anything about n8n, including building workflows, nodes and credentials, self-hosting and administration, the API, and troubleshooting. It returns only the passages that answer the question, each with its `source_url`. Ask a specific, complete question. The response is a JSON array of `{content, source_url}`, most relevant first.
{% endhint %}

## In this section

* [Approaches for transforming data](/build/work-with-data/transform-data/approaches-for-transforming-data.md): compare transformation nodes, expressions, the Code node, and the AI Transform node.
* [Expressions for data transformation](/build/work-with-data/transform-data/expressions-for-data-transformation.md): use expression transformation functions anywhere expressions are supported.
* [Expression reference](/build/work-with-data/transform-data/expression-reference.md): reference for every built-in method and variable available in expressions.

## Related resources

* [Work with data](/build/work-with-data.md)
* [Understand n8n's data structure](/build/work-with-data/understand-n8ns-data-structure.md)
* [Expressions versus data nodes](/build/work-with-data/expressions-versus-data-nodes.md)
* [Reference data](/build/work-with-data/reference-data.md)
* [Filter out unwanted data](/build/work-with-data/filter-out-unwanted-data.md)
* [Pin and mock data](/build/work-with-data/pin-and-mock-data.md)
* [Handle special data types](/build/work-with-data/handle-special-data-types.md)
* [Data tables](/build/work-with-data/data-tables.md)