XML Viewer
Format, check well-formedness, minify, search, and inspect XML documents directly in your browser with a collapsible tree view.
Format & Beautify
Reformat compact or messy XML into readable, consistently indented markup for review and debugging.
Validation Errors
Check whether XML is well-formed and show clear parser messages when syntax issues are detected.
Collapsible Tree
Inspect nested elements, attributes, text nodes, namespaces, comments, and CDATA sections in a structured tree view.
Local Processing
XML is processed in your browser during normal use and is not intentionally transmitted to ${Brand.name} servers.
Paste XML or load an example to begin.
By using this free tool, you agree to the Efneze Terms of Use and Privacy Policy. Processing runs in your browser during normal use. Avoid pasting sensitive, production, credential, token, PHI, or confidential data unless permitted by your organization's policies.
Have feedback or an edge case for this tool?
Many tools begin as ideas from engineers solving practical technical problems. If you encounter an unusual format, have a feature request, or find a bug, share your feedback with the community.
Browser tools process data locally in your browser runtime. Avoid submitting sensitive information or PHI.
Inspect XML Before Debugging, Integrations, and Data Workflows
XML is commonly used in APIs, SOAP messages, configuration files, RSS feeds, document exchange, integration payloads, and legacy data workflows. An XML viewer helps developers and data teams format compact XML, check whether documents are well-formed, inspect nested elements and attributes, and search for values before using the data in applications or pipelines.
This tool is designed for quick document inspection: format XML, minify markup, explore a collapsible tree, review document statistics, search elements and attributes, and check well-formedness without connecting to a server-side parser.
Common XML Viewer Use Cases
API and integration debugging
Format XML copied from APIs, SOAP messages, webhooks, logs, or integration payloads so it is easier to inspect.
Configuration review
Beautify XML configuration files before troubleshooting, documenting, or sharing them with teammates.
Document exchange
Inspect nested elements, attributes, namespaces, comments, and CDATA sections in XML-based document workflows.
QA and support
Check whether sample XML is well-formed and identify parser errors before escalating integration issues.
XML Formatting, Tree Inspection, and Well-Formedness Checks
The viewer can help identify XML parser issues such as mismatched tags, missing closing tags, malformed attributes, and invalid document structure. These checks are for XML well-formedness and readability. They are not a replacement for XSD validation, DTD validation, domain-specific validation, production testing, or review in the target system.
Related Developer and Data Tools
XML often appears alongside JSON payloads, SQL queries, CSV exports, configuration files, and integration documents. Use the JSON Viewer to inspect nested JSON structures, the SQL Formatter to clean up query text, the Flat File Viewer for structured healthcare resources, the C-CDA Viewer for XML-based clinical documents, and the Regex Builder for verifying regular expressions, and the HTTP Request Inspector for parsing raw requests., with $Forge for planned local desktop data inspection workflows.
Frequently Asked Questions
What is an XML viewer?
An XML viewer helps you format, validate, search, and inspect XML documents in a readable structure. It is useful for reviewing APIs, SOAP messages, configuration files, RSS feeds, integration payloads, and XML-based document exchange.
Can I format XML online?
Yes. Paste XML into the viewer to beautify, minify, search, and inspect it directly in your browser.
Does this XML viewer support collapsible tree views?
Yes. Well-formed XML can be explored as a collapsible tree so you can inspect nested elements, attributes, text nodes, namespaces, comments, and CDATA sections more easily.
Can this tool validate XML?
The viewer checks whether XML is well-formed and shows parser messages when syntax issues are detected. It does not replace XSD validation, DTD validation, domain-specific validation, or testing in the target system.
Is XML input uploaded to ${SiteConfig.brand.name} servers?
The viewer processes XML in the browser during normal use, and tool input is not intentionally transmitted to ${SiteConfig.brand.name} servers. Teams should still avoid pasting production XML, credentials, tokens, secrets, connection strings, PHI, or sensitive data unless permitted by their organization's policies.
Does this tool support XML namespaces?
Yes. The viewer preserves namespace-prefixed elements and attributes and can display namespace information in the tree and statistics where detected.
Who uses XML viewers?
Developers, data engineers, QA analysts, integration teams, support engineers, and technical writers use XML viewers to review XML from APIs, logs, configuration files, SOAP messages, feeds, and document workflows.