# Introduction

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Dasel V3 was released in December 2025. Please raise any issues on [GitHub](https://github.com/TomWright/dasel).
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Dasel (short for **Data-Select**) is a command-line tool and library for querying, modifying, and transforming data structures such as JSON, YAML, TOML, XML, and CSV.

It provides a consistent , powerful syntax to traverse and update data - making it useful for developers, DevOps, and data wrangling tasks.

## Features

* **Multi-format support**: JSON, YAML, TOML, XML, CSV, HCL (with more planned).
* **Unified query syntax**: Access data in any format with the same selectors.
* **Query & search**: Extract values, lists, or structures with intuitive syntax.
* **Modify in place**: Update, insert, or delete values directly in structured files.
* **Convert between formats**: Seamlessly transform data from JSON → YAML, TOML → JSON, etc.
* **Script-friendly**: Simple CLI integration for shell scripts and pipelines.
* **Library support**: Import and use in Go projects.