VBA Code Checker

The VBA Code Checker Online is a stateless, web-based analysis tool that accepts VBA source text from modules, forms, and class modules. It reports syntax errors, undeclared variables, and structural issues across a single module or an entire project.
Conceptually, it performs lexical scanning, a lightweight VBA parser, symbol resolution, and a simple control-flow model to identify issues. It maps external references to Office libraries, validates Option Explicit usage, and flags patterns that commonly cause runtime errors.
Benefits and differentiators include online access, project-wide analysis across multiple code files, and security-oriented checks such as risky Shell usage or CreateObject calls. It returns a structured set of issues with severity, location, and suggested fixes, aiding faster debugging.
Core features include: code_snippet input, optional project context (name and Office version), and references; outputs such as issues with line numbers, a risk score, and an export-friendly report; use cases include pre-release audits, legacy workbook modernization, and macro hygiene reviews.