XML Editor Online

A powerful, free XML editor that runs in your browser. Edit XML with syntax highlighting, real-time validation, tree view, and format conversion. Handles namespaces, CDATA, large files up to 100MB+, and multi-tab editing. No signup required.

Open XML Editor

Features

Full-Featured XML Editing

Edit XML with syntax highlighting for elements, attributes, namespaces, comments, and CDATA sections. Tag matching, auto-indentation, and line numbers make editing complex XML documents effortless.

Real-Time Validation

See XML errors as you type with exact line numbers and clear descriptions. Unclosed tags, mismatched elements, malformed attributes, and invalid characters are all caught instantly.

Tree View & Structure Explorer

View your XML as a collapsible tree alongside the text editor. Navigate element hierarchies, inspect attributes, and jump to any node in the document.

Multi-Tab Editing

Open multiple XML files in tabs. Drag and drop to reorder tabs, compare files side by side with the built-in Diff Viewer, and work across documents seamlessly.

Search & Replace

Find and replace text in your XML with support for regular expressions, case sensitivity, and whole word matching. Navigate matches with keyboard shortcuts.

Format Conversion

Convert XML to JSON, YAML, or TOML with one click. Import JSON, YAML, or TOML and convert it to XML. Tidy Code preserves element hierarchy, attributes, and text content.

Large File Support

Edit XML files up to 100MB+ with WebAssembly-powered parsing. Handle large SOAP responses, SVG files, configuration exports, and data feeds without your browser slowing down.

How to Edit XML Online

Frequently Asked Questions

What is the best free XML editor online?

Tidy Code is a free online XML editor with syntax highlighting, real-time validation, tree view, format conversion, and large file support. It runs entirely in your browser with no signup required.

Can I edit large XML files online?

Yes. Tidy Code uses WebAssembly for high-performance parsing, allowing you to edit XML files up to 100MB+ including large SOAP responses, SVG files, and data feeds.

Does the XML editor support namespaces?

Yes. Tidy Code fully supports XML namespaces, prefixed elements, CDATA sections, processing instructions, and all standard XML features with proper syntax highlighting.

Can I convert XML to JSON?

Yes. Tidy Code converts XML to JSON, YAML, and TOML with a single click. The conversion preserves element hierarchy, attributes, text content, and handles mixed content correctly.