Upload your XML file and convert it to YAML for easier reading and editing, then download the YAML result instantly.
Converting XML to YAML is fast and private with XConvert's free browser-based tool. No signup required, no file uploads — everything runs client-side in your browser.
Paste or load your XML — Copy your XML content into the input editor on the left. You can also drag and drop an .xml file directly into the editor. The tool validates your XML on input and highlights any syntax errors.
Configure conversion options — Choose how XML attributes should be mapped (as prefixed keys like @attr or as nested objects), set your preferred YAML indentation level, and decide whether to strip XML namespaces or preserve them as key prefixes.
Click "Convert" — XConvert parses your XML client-side and instantly generates clean, properly indented YAML. The output appears in the right-hand editor with syntax highlighting.
Copy or download the result — Use the copy button to grab the YAML to your clipboard, or download it as a .yaml file. You can continue editing the output directly in the browser.
Need to go the other direction? Try the YAML to XML converter. You can also convert your XML to other formats using the XML to JSON converter or convert between YAML and other formats with the YAML to JSON converter.
XML to YAML conversion is the process of transforming data structured in XML (eXtensible Markup Language) into YAML (YAML Ain't Markup Language). XML uses a verbose, tag-based syntax with explicit opening and closing elements, attributes, and namespace declarations. YAML, by contrast, uses a minimal, indentation-based syntax designed for human readability. Converting between them lets you move data from enterprise and legacy systems into modern DevOps and configuration management workflows.
This conversion is increasingly common as organizations modernize their infrastructure. Kubernetes, Docker Compose, Ansible, GitHub Actions, and most CI/CD platforms use YAML as their primary configuration format. Teams migrating from XML-heavy toolchains — such as Maven, Ant, Spring XML configurations, or SOAP service definitions — often need to convert existing XML documents into YAML to align with newer workflows and reduce configuration verbosity.
The transformation involves collapsing XML's tag hierarchy into YAML's indentation-based nesting, deciding how to represent XML attributes (which have no direct YAML equivalent), handling mixed content and namespaces, and simplifying the overall structure. Because XML is more expressive in certain areas (attributes, namespaces, processing instructions), some information may need to be represented differently or may not have a perfect YAML analog, making thoughtful conversion settings important.
| Feature | XML | YAML |
|---|---|---|
| Syntax style | Tag-based with opening/closing elements | Indentation-based |
| Verbosity | High (repeated tag names) | Low (minimal syntax) |
| Readability | Structured but verbose | Highly human-readable |
| Attributes | Native support on elements | No native concept (convention-based) |
| Namespaces | Full support with prefixes and URIs | Not supported |
| Comments | <!-- comment --> |
# comment |
| Data types | All values are text | Native strings, numbers, booleans, nulls |
| Schema validation | XSD, DTD, RelaxNG | JSON Schema |
| Mixed content | Supports text mixed with child elements | No mixed content support |
| Document structure | Single root element required | Multi-document support with --- |
| File extensions | .xml |
.yaml, .yml |
| Primary ecosystem | Enterprise, SOAP, document processing | DevOps, cloud-native, configuration |
Kubernetes and cloud-native migration — Organizations moving workloads to Kubernetes need configurations in YAML. Converting existing XML-based deployment descriptors, service definitions, or application configurations to YAML is a critical step in adopting cloud-native infrastructure and container orchestration platforms.
Simplifying application configuration — XML configuration files for frameworks like Spring, Hibernate, or Log4j can be hundreds of lines long due to tag verbosity. Converting these to YAML produces significantly shorter, more readable files that are easier to maintain, review in pull requests, and understand at a glance.
CI/CD pipeline modernization — Teams migrating from XML-based build tools (Ant, Maven, Jenkins config.xml) to modern CI/CD platforms (GitHub Actions, GitLab CI, CircleCI) need to convert build and deployment configurations from XML to YAML. This conversion accelerates the migration by providing a starting point in the target format.
API response transformation — When consuming XML APIs (especially SOAP services) and feeding data into systems that expect YAML, converting API responses from XML to YAML streamlines data processing pipelines. This is common when integrating legacy services with modern microservice architectures.
Documentation and readability improvement — Technical documentation, configuration examples, and data samples are often easier to read and present in YAML than XML. Converting XML snippets to YAML for documentation purposes improves clarity for developers who are more familiar with YAML syntax.
Infrastructure as Code adoption — Tools like Ansible, SaltStack, and CloudFormation (which supports YAML) use YAML for defining infrastructure. Converting existing XML-based infrastructure definitions or inventory files to YAML enables adoption of these modern IaC tools without manually rewriting every configuration.
One of the most significant challenges in XML to YAML conversion is handling XML attributes. XML elements can carry attributes — key-value pairs defined within the opening tag, like <server port="8080" secure="true">. YAML has no native concept of attributes; it only has keys and values in mappings. The converter must decide how to represent this information. The most common convention is to prefix attribute keys with @ (e.g., @port: 8080) or to nest them under a special _attributes key. XConvert uses the @ prefix convention by default, which is widely recognized by tools that process YAML derived from XML, and keeps the output compact.
XML namespaces add another layer of complexity. Namespaces use prefixes and URI declarations to avoid element name collisions across different XML vocabularies — for example, <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">. YAML has no namespace mechanism. During conversion, namespace prefixes can either be preserved as part of the key name (e.g., soap:Envelope), stripped entirely (leaving just Envelope), or mapped to a nested structure. For most configuration use cases, stripping namespaces produces the cleanest YAML. However, if you need to round-trip the data back to XML or preserve the full semantic meaning, keeping prefixes is safer. XConvert lets you choose between these strategies in the conversion settings.
Mixed content — where an XML element contains both text and child elements, like <p>Click <a href="/">here</a> for more</p> — is another area where XML's expressiveness exceeds YAML's capabilities. YAML does not support mixed content natively. The converter handles this by extracting text segments into special keys (like _text or #text) alongside child element keys. While this preserves the data, the resulting YAML structure may look unfamiliar if you're not expecting it. For document-oriented XML with heavy mixed content (like XHTML), consider whether YAML is truly the right target format or if a format like JSON might be more appropriate — you can try the XML to JSON converter for comparison.
Validate your XML before converting — Ensure your XML is well-formed (properly nested tags, correct escaping, single root element) before conversion. Malformed XML will cause parsing errors. XConvert highlights syntax issues in the input editor to help you catch problems early.
Decide on an attribute mapping strategy upfront — Before converting, determine how your target system expects attributes to be represented. If you're generating YAML for a specific tool (like Ansible or Kubernetes), check its documentation for conventions. The @ prefix convention works well for general-purpose conversion.
Strip namespaces when they're not needed — If the XML namespaces are only relevant to the XML ecosystem (SOAP envelopes, XSD references) and your YAML consumer doesn't need them, strip them during conversion. This produces much cleaner, more readable YAML output.
Review how empty elements are handled — XML self-closing tags like <enabled/> can be interpreted as an empty string, null, or an empty mapping in YAML. Check the converter output to ensure empty elements are represented in a way your consuming application expects. XConvert defaults to null for empty elements.
Watch for data type inference — YAML parsers automatically infer types: true becomes a boolean, 123 becomes an integer, 1.5 becomes a float. Values that were plain text in XML may be interpreted as typed values in YAML. If this causes issues, wrap values in quotes in the YAML output to force string interpretation. XConvert offers a "quote all values" option for this purpose.
Handle large files in chunks — While XConvert handles most files efficiently in the browser, very large XML documents (over 10–15 MB) may slow down the conversion. For batch processing of large files, consider using command-line tools like yq or xmlstarlet alongside XConvert for smaller, interactive conversions. You might also find the JSON to YAML converter useful if your workflow involves an intermediate JSON step.
No. XConvert's XML to YAML converter processes everything client-side in your browser using JavaScript. Your XML data never leaves your device. This makes it safe to use with proprietary configurations, internal API responses, and sensitive data — no server-side processing, no data retention, no account required.
XML attributes are converted to YAML keys with an @ prefix by default. For example, <server port="8080"> becomes server: with @port: "8080" as a child key. You can change this behavior in the settings to use a nested _attributes object or to merge attributes directly as regular keys (without a prefix), depending on what your downstream tools expect.
You have three options: preserve namespace prefixes as part of key names (e.g., soap:Envelope), strip all namespace prefixes (leaving just Envelope), or remove namespace declarations entirely. For most YAML use cases — especially Kubernetes configs and application settings — stripping namespaces produces the cleanest output. If you need to convert back to XML later, preserving them is recommended.
YAML supports comments with the # syntax, so XML comments can theoretically be converted. However, most XML parsers treat comments as outside the data model, similar to how YAML parsers handle YAML comments. XConvert attempts to preserve XML comments as YAML comments where their position in the document can be mapped to a location in the YAML output. Complex or interleaved comments may be lost during conversion.
Mixed content (text interspersed with child elements) is represented using special keys. Text segments are placed under a _text or #text key alongside the child element keys. For example, <p>Hello <b>world</b></p> becomes a mapping with _text: Hello and b: world. This approach preserves the data but changes the structure. For heavily mixed-content XML (like XHTML), consider using the XML to JSON converter instead.
Almost always, yes. YAML's indentation-based syntax eliminates the need for closing tags, which are a major source of verbosity in XML. A typical XML configuration file can shrink by 30–60% when converted to YAML, depending on the depth of nesting and the length of element names. The reduction is most dramatic for deeply nested structures with short values.
When the converter encounters multiple sibling elements with the same tag name, it automatically converts them into a YAML sequence (array). For example, <items><item>A</item><item>B</item></items> becomes items: with a list - A and - B. This detection is automatic and produces idiomatic YAML arrays.
CDATA sections (<![CDATA[...]]>) in XML are used to include text that should not be parsed as markup. During conversion, the content inside CDATA is extracted as a plain string value in YAML. If the content contains characters that are special in YAML (like : or #), it will be automatically quoted or use a YAML block scalar (| or >) to preserve the content safely.
Yes. DTD declarations (<!DOCTYPE>) and XSD schema references (xsi:schemaLocation) are parsed but not included in the YAML output, since YAML does not have an equivalent schema reference mechanism. The actual data content is converted normally. If you need schema validation for the YAML output, you can define a separate JSON Schema and validate against it.
The conversion is largely reversible if you preserve attribute prefixes (@) and namespace information. XConvert's YAML to XML converter can interpret the @ prefix convention to restore XML attributes. However, some XML-specific features — like processing instructions (<?xml ...?>), DTD declarations, and precise comment positioning — may not survive a round trip. For critical round-trip scenarios, test the full conversion cycle (XML → YAML → XML) and compare the results before relying on it in production workflows.