XML Editor Online

What is an XML Editor?

An XML Editor is a tool for reshaping XML (eXtensible Markup Language) rather than merely reading it: you paste or upload a document, then re-indent it, collapse it back to a single line, or step through its nesting until the markup matches what the consuming service expects. XML that arrives from an API log, a build artifact or a feed is often one unbroken line, which makes an unclosed tag or a stray ampersand almost impossible to spot by eye.

This editor parses whatever you type using the browser's own XML parser and hands the result to one of three output modes. Beautify rebuilds the document with two-space indentation and one tag per line, Minify squeezes the whitespace out from between tags while keeping the XML declaration intact, and Tree view renders the same document as expandable nodes so you can confirm nesting before you copy anything back. When the markup will not parse, the editor names the exact line and column and marks the break, which makes it a practical scratchpad for anyone hand-editing configuration files, SOAP payloads or test fixtures.

How does this XML Editor work?

• Add the XML You Want to Edit: Type or paste the markup into the "Input" box, or use the side icons to upload a .xml or .txt file (up to 10 MB), pull one in from a URL, or drop in the sample document.
• Choose an Output Mode
  • Tree view shows the document as expandable nodes for checking how elements nest.
  • Beautify re-indents the markup with two spaces per level and one tag per line.
  • Minify strips the whitespace between tags and keeps the XML declaration.
• Leave Auto Update On, or Switch It Off
  • Auto Update is checked to begin with, so the output is rebuilt on every keystroke.
  • Uncheck it while you work through a longer edit and refresh on demand instead.
• Click the "XML Editor" Button (if Auto Update is off): With Auto Update unchecked, press the "XML Editor" button to re-parse the input and rebuild the output.
• Read the Output: Valid markup lands in the "Output" panel in whichever mode you picked. A broken document is replaced by an "Invalid XML at line 4, column 12" message that repeats the offending source line with a ^^^ marker under the column.
• Reach for the Side Icons (Optional)
  • Copy: Copy the input, or the current output mode's text, to the clipboard.
  • Clear: Empty the input box, which clears the output with it.
  • Download: Save the input as a .txt file, or the finished output as a .xml file.

What are the use cases of the XML Editor tool?

• Beautifying Minified XML: Turn a one-line SOAP response or RSS feed into indented markup you can actually edit.
• Minifying Before Transport: Squeeze whitespace out of a config file or request body once the edit is done.
• Locating Parse Errors: Get the line, the column and a ^^^ pointer for an unclosed tag or unescaped ampersand instead of a vague failure.
• Repairing Test Fixtures: Correct values in an XML fixture and confirm it still parses before it goes back into a suite.
• Rechecking Nesting Mid-Edit: Switch to tree view to verify a moved element sits under the right parent, then switch back to beautify.

Frequently Asked Questions (FAQs)

Do I have to install anything to beautify or minify XML here?

No. This XML Editor runs entirely inside your browser tab, so beautifying, minifying and validating need no download, plugin or extension.

Does my XML get uploaded to a server while I edit it?

No. Parsing, re-indenting and minifying all happen on your own machine through the browser's built-in XML parser, so the markup you paste never leaves the page.

How large an XML file can I open in this editor?

File uploads are capped at 10 MB for .xml and .txt files, and you can paste longer documents straight into the input box. Very deep or very long markup may take longer to re-render, depending on your browser and device.

What's the difference between Beautify, Minify and Tree view?

Beautify re-indents the document with two spaces per level and one tag per line. Minify strips the whitespace between tags into a single line while keeping the XML declaration. Tree view renders the same document as expandable nodes so you can inspect nesting without changing the underlying text.

Can this tool tell me if my XML is well-formed?

Yes. The editor parses your input with the browser's built-in XML parser, and if the document is not well-formed it reports the exact line and column of the problem along with a pointer to the offending text.

Can I load XML from a URL instead of pasting it?

Yes. Use the URL icon next to the input box, enter the address of a publicly accessible XML or TXT file, and the editor fetches and loads its content automatically.

Can I download the edited XML when I'm done?

Yes. Use the download icon next to the output panel to save the current output mode's result as a .xml file, or download the raw input as a .txt file from the icons next to the input box.