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Data Format Tools

Format and validate XML with proper indentation, and convert YAML to JSON. All processing happens in your browser with no data sent to any server.

Indent:
XML Input
Formatted Output
JSON indent:
YAML Input
JSON Output

About XML Formatting and YAML to JSON Conversion

XML (Extensible Markup Language) is a widely used format for configuration files, API responses, application logs and data interchange. When XML is minified or machine-generated it becomes difficult to read, with all the content on a single line or with inconsistent indentation. The XML Formatter parses the raw XML and outputs it with consistent indentation, making it immediately readable and easier to debug. It also validates the XML structure and reports any parse errors clearly, including the line where the problem occurs.

YAML (YAML Ain't Markup Language) is the dominant configuration format for modern DevOps tooling. Kubernetes manifests, Ansible playbooks, Docker Compose files, GitHub Actions workflows and most CI/CD pipeline definitions use YAML. JSON is the standard format for APIs, web applications and most programming environments. Being able to convert between the two quickly is a routine need when integrating tools that use different formats or when writing scripts that need to process configuration data.

Both tools run entirely in your browser. This matters when working with configuration files that may contain sensitive data like API keys, database credentials, internal hostnames or infrastructure details that you would not want to send through a third-party web service.

XML Formatter Examples

Minified input
<config><server><host>192.168.1.1</host><port>8080</port></server></config>
Formatted output (2 spaces)
<config> <server> <host>192.168.1.1</host> <port>8080</port> </server> </config>
YAML to JSON example
server: host: 192.168.1.1 port: 8080 ssl: true
Converted JSON output
{ "server": { "host": "192.168.1.1", "port": 8080, "ssl": true } }

Common Use Cases

  • 🔍
    Debugging API responses. REST APIs often return minified XML or JSON. Format the response to quickly find the field you need without counting brackets and tags manually.
  • ☸️
    Kubernetes and Docker Compose. Convert YAML manifests to JSON for tools that only accept JSON, or convert JSON outputs back to YAML for cleaner configuration files.
  • ⚙️
    Ansible playbooks. Ansible uses YAML for playbooks and inventory files. Convert YAML to JSON to use the data in scripts or API calls that require JSON input.
  • 📋
    Windows configuration files. Many Windows application configuration files and SCCM packages use XML. Format them to make editing easier and spot structural errors quickly.
  • 🔐
    Private data safe. Unlike online formatters that send your data to a server, this tool processes everything locally. Safe to use with config files containing credentials or internal addresses.
Does the XML formatter validate the XML?
Yes. It uses the browser's built-in DOMParser to parse the XML before formatting. If the XML is malformed, the error message and the location of the problem are shown above the output. This makes it useful for finding unclosed tags, mismatched quotes or encoding issues.
Does the YAML converter handle all YAML features?
The converter handles the most common YAML structures including nested mappings, sequences, multi-line strings, booleans, numbers and null values. Very advanced YAML features like anchors, aliases and custom tags are not supported, but these are rarely encountered in everyday config files.
Does the converter detect numeric values automatically?
Yes. Values that look like integers or floats in YAML are output as JSON numbers, not strings. So port: 8080 becomes "port": 8080 in the JSON output, not "port": "8080". This matters for applications that perform numeric comparisons on the data.