Free Online XML Editor
An XML editor lets you write, modify, and format XML documents with full syntax highlighting, automatic tag closing, and real-time validation feedback. We built five XML utilities into one workspace so you can edit, view tree structures, validate, convert to JSON, and search-replace across your XML content without installing desktop software or signing up. Paste your XML, upload a file from your computer, and start editing immediately. Your data never leaves your browser.
XML Editor
A full-featured code editor with Dracula theme syntax highlighting, auto tag closing, bracket matching, code folding, adjustable font size, word wrap, undo/redo, and real-time status bar.
XML Tree Viewer
Parses your XML into an interactive collapsible tree showing elements, attributes, and text nodes. Navigate complex documents by expanding and collapsing branches.
XML Validate
Checks XML well-formedness for unclosed tags, mismatched elements, and unescaped characters. Reports each issue with severity level and line number.
XML to JSON
Converts XML data into structured JSON. Attributes become @attributes objects, repeated elements form arrays, and text content is preserved.
Search and Replace
Find text or regex patterns in your XML and replace them in bulk. Shows a live match counter before you commit to changes.
Online XML Editor with Professional Editing Features
If you have ever tried to edit an XML configuration file in a plain text editor, you know the frustration. Missing closing tags are invisible until the parser fails, deeply nested elements become hard to track, and a single misplaced angle bracket breaks the entire document. Our online XML editor solves these problems with a professional code editing environment that runs entirely in your browser. You get the same features you would expect from a desktop IDE, including syntax-aware highlighting, automatic tag completion, bracket matching, and code folding, without needing to install anything.
Syntax Highlighting and Code Folding
The editor uses the Dracula color theme to distinguish tags, attributes, values, comments, and text content visually. Code folding lets you collapse entire element subtrees by clicking the fold arrow in the gutter, which is invaluable when you are working with large XML files containing hundreds of nested elements. You can fold everything at once using the toolbar button, then unfold only the sections you need to inspect.
File Upload and Drag-and-Drop Support
We accept uploads in a wide range of XML-based formats: .xml, .xsl, .xslt, .svg, .xhtml, .rss, .atom, .plist, .config, .csproj, .props, and .targets files. Drag and drop a file onto the editor or click the upload button in the toolbar. Because everything runs locally in your browser, there is no file size limit imposed by server uploads and no risk of exposing sensitive data to external services.
Tree View, Validation, and Conversion
Beyond basic text editing, we provide three panels that give you deeper insight into your XML content. Each panel opens below the editor so you can see your code and the panel output at the same time.
The XML Tree Viewer parses your document using the browser's DOMParser API and displays it as a collapsible tree. Each node shows the tag name with its attributes, and text-only elements display their content inline. You can click any branch to expand or collapse it, making it easy to navigate documents with deep nesting like SOAP responses, Maven POM files, or SVG graphics.
The validation panel checks your XML for well-formedness errors in real time. Unclosed tags, mismatched element names, and unescaped ampersands are each reported with the line number and severity level. The status bar at the bottom also shows a continuous validation indicator, so you get instant feedback as you type without needing to open the panel.
Converting XML to JSON
When you need your XML data in JSON format, open the conversion panel and the output appears immediately. We walk the document tree recursively: attributes go into @attributes objects, repeated child elements are automatically grouped into arrays, and text-only elements become simple string values. You can copy the JSON output with one click, ready for import into JavaScript applications, REST APIs, or NoSQL databases.
Search and Replace with Regex Support
The search and replace bar supports both plain text and regular expression patterns. Toggle case sensitivity and regex mode using the checkboxes, and the live match counter shows how many occurrences exist before you replace. This is especially useful for bulk renaming XML namespaces, updating attribute values across large documents, or cleaning up generated XML from third-party tools.
Your Data Stays in Your Browser
We process everything locally using the built-in DOMParser API and JavaScript string operations. Your XML never touches our servers. That means you can safely edit production configs with database credentials, XSLT stylesheets with internal endpoints, and data feeds with customer information. No server communication, no cookies, no signup required.
Related Online XML and Developer Tools
If you work with XML regularly, these free tools complement what you can do here:
- XML Optimizer -- optimize XML by stripping comments, collapsing whitespace, and pruning empty nodes
- XML Formatter -- format, minify, validate, and convert XML in one tool
- XML Beautifier -- beautify and indent XML with syntax highlighting
- XML Pretty Print -- pretty print XML with configurable indentation
- XML Minifier -- minify XML with comment and whitespace removal
- XML Checker -- check XML syntax and structure for errors
- XPath Tester -- test XPath expressions against XML documents
- JSON Formatter -- format, minify, validate, and transform JSON data