Validate against the right rules
Run XSD, DTD, and Schematron checks for one file, a folder, or a repeatable batch.
Validate XMLFlexible access
Choose how to run it.
Start with Windows, automate repeatable checks, call focused XML operations, or connect agent workflows.
Desktop / WindowsEdit, validate, and diagnose XML
CLI / CIAutomate repeatable checks
Web APIUse the shared service contract
AI agentsUse deterministic ValBuddy tools
Four access paths with explicit capability boundaries.
- XSD, DTD, SchematronSchema and rule validation
- Large XMLStreaming and dedicated views
- Desktop + ValBuddyInteractive and automated checks
- WindowsFocused native workflow
One correctness loop
Validate, understand, fix, and run again.
Keep the document, its schema context, and the validation result close together so every failure leads to a concrete next action.
Automate with ValBuddy
Run deterministic XML checks locally from a developer shell, AI coding agent, scheduled task, or Windows CI runner.
See the CLI workflowIntegrate through the Web API
Check well-formedness, format XML, or verify the documented safe signature profile through the shared contract.
Explore the XML Web APIEvidence, not guesswork
See the failure where it happens.
Validation findings stay connected to the source document. Move from a clear message to the affected line, correct the data, and verify the result again.
- Human-readable validation reports
- Text and grid views for inspection and repair
- Schema-aware context while editing XML
- Batch results that support review and follow-up
Local tools for agents and CI
Reduce setup work and unnecessary model context.
Ready-to-run ValBuddy commands avoid repeatedly selecting dependencies, generating validation glue code, and troubleshooting argument order. The CLI reads local files and returns status and diagnostics that an agent can interpret without receiving the entire document.
An agent may still send selected content or diagnostics to its model provider. XML validation can also use the network when schemas, DTDs, or related resources resolve remote references.
Bring your XML correctness workflow together.
Start with the free Windows trial.
More details for this workflow
Use XML ValidatorBuddy to validate, diagnose, and fix XML faster across desktop and automation workflows. Run XSD, DTD, and Schematron checks, handle large XML reliably, verify digital signatures with clearer diagnostics, and keep data correctness at the center of the workflow.
Validation-first XML workflow software - Download the 14 days Free Trial now!
XML ValidatorBuddy is built for teams that need correct XML data, not just another editor. Validate XML in batches, inspect large XML without turning file size into a blocker, diagnose failures with clear reports, enforce Schematron business rules, and move from interactive debugging to repeatable command-line workflows in one focused tool. Learn more »
- Schema validation Validate XML with XSD, DTD, and Schematron support.
- Batch validation Check folders and large XML collections in repeatable runs.
- Fix validation failures Use text and grid views to inspect data and repair invalid XML faster.
- Large XML handling Validate and inspect multi-GB XML where generic editors fall short.
- Automation and CLI Bring XML checks into scripts, CI pipelines, and repeatable validation workflows.
- Schematron Enforce XML business rules alongside structural validation.
- XML Digital Signatures Verify trusted XML exchanges with SHA-2 support and detailed failure diagnostics.
- JSON and conversion support Support mixed XML and JSON workflows without switching tools.
XML ValidatorBuddy is designed around the XML correctness loop: validate, understand the failure, fix the issue, and run the check again. Instead of burying validation inside a generic editor experience, it gives teams a focused workflow for standards-based XML checking, business-rule enforcement, and follow-up troubleshooting.