XMLBuddy Article

Format huge XML data with no size limit

Use the File Explorer streaming workflow to format a very large XML document without loading it into the standard editor.

Large XML workflowAbout 6 minutesXML ValidatorBuddy for Windows

Outcome: a formatted copy is written next to the source file while the original remains unchanged.

Why use the streaming formatter?

Very large XML documents can be difficult to inspect when they contain little or no indentation. Opening the entire file in a general editor can also consume substantial memory. XML ValidatorBuddy provides a file-based formatter that processes the document as a stream.

The workflow reads and writes the XML progressively. That makes it suitable for files that are far larger than the memory you would normally dedicate to an editor window.

Format the file from File Explorer

Open the built-in File Explorer and navigate to the folder containing the XML document.
Select the source file and choose the command for formatting a large XML document.
Confirm the output location. The formatter writes a new copy beside the original file.
Wait for the completion message, then open the formatted copy in the Large File window if you need to inspect it.

XML ValidatorBuddy File Explorer menu for formatting a huge XML file — The large-file formatting command runs from the built-in File Explorer.

Continue in the Large File window

After formatting, use the dedicated Large File window to browse, search, and work with the result. The original unformatted document remains available for comparison or recovery.

Keep the validation task separate: formatting changes layout. Validation checks the XML against syntax or schema rules. Run the appropriate validation after formatting when correctness must be confirmed.

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Work with XML that does not fit a normal editor.

Try the large-file workflow in XML ValidatorBuddy.

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More details for this workflow

You can format huge XML documents without loading them directly into the XML editor by using the built-in File Explorer window. This feature is particularly useful when you receive large XML files that are difficult to read due to a lack of formatting. Rather than manually formatting these files or loading them entirely into memory, the tool offers a streaming-based process, allowing you to reformat the document on the fly without consuming excessive system resources. This ensures that even extremely large XML files can be converted to a more readable format efficiently.

The conversion process works by streaming the input data, meaning that the entire file doesn't need to be loaded into memory all at once. Instead, the content is processed in chunks, ensuring there is no size limitation. Whether you're dealing with a file that's a few megabytes or multiple gigabytes in size, this approach allows you to handle it seamlessly. After the reformatting is complete, a copy of the newly formatted XML file is saved next to the original file, so you don’t lose the unformatted version. Once this process finishes, a dialog box appears, notifying you of the successful conversion. This is especially helpful for keeping track of large-scale formatting operations that might take a significant amount of time.