Online BPMN Validator

The tool validates BPMN 2.0 diagrams by parsing BPMN XML and applying a two-layer check: schema conformance and domain-specific rules. Conceptually, a tokenized XML model is compared against the BPMN 2.0 specification to ensure elements, attributes, and relationships are used correctly. It reports syntax errors, missing required elements, invalid sequencing, and routing inconsistencies. The validator is designed for developers and business analysts who produce BPMN diagrams for process design, analysis, and governance. Unique value lies in actionable reporting: each issue includes location hints (line or element reference), a concise description, and suggested fixes. Core features include: (1) strict BPMN 2.0 schema validation, (2) semantic checks for start/end events, gateways, tasks, and flows, (3) support for extension elements, (4) multi-file or multi-diagram validation, (5) exportable validation reports in JSON or XML, and (6) detailed error severity and suggested remediation. Typical use cases include model reviews, onboarding new team members to BPMN, and integrating validation in CI pipelines to prevent invalid diagrams from progressing downstream.