Format and validate XML

Formatting requires XML that can be parsed and may normalize insignificant whitespace, indentation, declaration style, entity representation, and other textual choices. It does not validate against an XSD, DTD, namespace contract, or business rules. External-resource behavior is not a substitute for explicit validation. Compare element names, attributes, namespaces, text nodes, ordering, and representative values, then test the result with the receiving system.

Check the aspects that determine the meaning of the result: keys, field names, value types, nesting, row and column counts, delimiters, quotes, escaping, line endings, and character encoding. For comparison results, inspect both additions and removals instead of reading only the highlighted summary. For Base64, distinguish encoded text from arbitrary binary data. For checksums, compare every character and confirm the algorithm name. Validate important output with the system that will receive it because syntactically valid data can still violate a schema, required field, uniqueness rule, or business constraint.

Formatting and validation answer different questions. Formatting parses valid data and writes it again with consistent indentation or layout so people can inspect it more easily. Validation checks whether the syntax can be parsed, but it does not automatically confirm that the values satisfy a schema or business rule. Minifying removes unnecessary whitespace without changing the parsed value. Inspection summarizes structure and depth. For XML and YAML, formatting can normalize insignificant whitespace or representation choices, so compare semantic values rather than expecting the original text style to remain identical.

Data that looks valid can contain an invisible delimiter, non-breaking space, unmatched quote, duplicate structural marker, malformed escape, mixed line ending, unsupported encoding, or format-specific feature that changes parsing. Start with the reported line, column, or path when available. Reduce the input to the smallest section that still fails, then restore surrounding records gradually. For CSV, confirm the delimiter and header assumption. For JSON, XML, or YAML, check brackets, indentation, quoting, entities, and nesting. Preserve a copy of the source while diagnosing so a correction does not remove valid information.

No installation or registration is required to use the listed data utilities. Open the action that matches the task, add or paste the source, choose the relevant mode, and copy or download the result. Before replacing an important file, keep the original and test the output with the receiving application. Installation is not the main compatibility question: schema expectations, encoding, delimiters, workbook features, and supported syntax still determine whether another system will accept the result.