How can I open and view XML in a tree online?

Paste XML or upload an .xml file and the viewer renders a collapsible tree immediately. You can inspect nodes, attributes, and hierarchy, then switch to raw view or format the XML for easier reading.

Can I format XML online without uploading it?

Yes. XML parsing, formatting, and validation run locally in your browser, so your XML content is not uploaded to our servers.

Can I open large XML files in this viewer?

You can open big XML files since processing happens in your browser. Very large documents depend on your device's available memory, but typical multi-megabyte files load into the tree view quickly.

Does the viewer validate my XML?

Yes. The viewer parses your XML as you paste or edit and flags invalid syntax immediately, so you can spot malformed tags, unclosed elements, or broken nesting before exporting.

What is the difference between viewing and formatting XML?

Viewing renders your XML as an interactive tree so you can navigate its structure, while formatting (pretty-printing) re-indents the raw markup into clean, readable text you can copy or download.

XML Viewer Online - Open & Format XML | XML Viewer

Open XML files online, pretty-print them, and inspect the structure in tree view. Free XML viewer and validator with private, browser-based processing.

Paste XML or upload an .xml file to open it instantly in tree view, pretty print the markup, and validate structure directly in your browser without uploading your data.

Tree ViewFormat & Pretty PrintInstant ValidationNo Upload Required

XML Input

XML Viewer Online

Enter XML to view structure

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How to open and format XML online

Paste your XML code or upload a file.

Open the XML in an interactive tree view to inspect nodes and attributes.

Pretty print the XML, then copy or download the formatted result.

1. Paste or Upload XML

2. View XML Structure

3. Format & Export

Key Features

Tree View

Navigate complex XML structures quickly with a collapsible tree view.

Instant Validation

Catch invalid XML syntax immediately while you paste or edit.

No Upload Required

All processing happens locally in your browser and stays on your device.

Format & Pretty Print

Pretty print minified XML for cleaner structure and easier debugging.

Paste XML or upload an .xml file to open it instantly in a collapsible tree view, pretty-print the markup, and validate its structure online. This XML viewer renders nodes, attributes, and nesting in your browser, then lets you copy or download the formatted result. Parsing runs locally, so your XML never leaves your device.

How to Use the XML Viewer

1
Paste or upload your XML
Paste XML markup into the input area or upload an .xml file from your device to load it into the viewer.
2
View the structure in tree view
Open the parsed XML as an interactive, collapsible tree to inspect elements, attributes, and nesting at any depth.
3
Format and pretty-print
Click Format XML to indent minified markup into clean, readable structure, with invalid syntax flagged instantly.
4
Copy or download
Use Copy to grab the formatted XML for your clipboard or Download to save it as a .xml file.

References

W3C — Extensible Markup Language (XML) 1.0
The authoritative W3C Recommendation defining XML syntax, well-formedness, and validity rules.
MDN — XML introduction
A beginner-friendly overview of XML structure, elements, and attributes from MDN Web Docs.

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Frequently Asked Questions

How can I open and view XML in a tree online?: Paste XML or upload an .xml file and the viewer renders a collapsible tree immediately. You can inspect nodes, attributes, and hierarchy, then switch to raw view or format the XML for easier reading.
Can I format XML online without uploading it?: Yes. XML parsing, formatting, and validation run locally in your browser, so your XML content is not uploaded to our servers.
Can I open large XML files in this viewer?: You can open big XML files since processing happens in your browser. Very large documents depend on your device's available memory, but typical multi-megabyte files load into the tree view quickly.
Does the viewer validate my XML?: Yes. The viewer parses your XML as you paste or edit and flags invalid syntax immediately, so you can spot malformed tags, unclosed elements, or broken nesting before exporting.
What is the difference between viewing and formatting XML?: Viewing renders your XML as an interactive tree so you can navigate its structure, while formatting (pretty-printing) re-indents the raw markup into clean, readable text you can copy or download.