json2apex - The Best JSON to Apex Converter

Effortlessly convert JSON to Apex classes for Salesforce, complete with test classes. Fast, reliable, and user-friendly—perfect for Salesforce developers.

Engineered by Salesforce Integration Architects

Welcome to json2apex.com. This platform was built by a team of Certified Salesforce Application and System Architects who have spent over a decade designing, building, and scaling enterprise-level integrations.

Having integrated Salesforce with core transactional backends like SAP ERP, NetSuite, Oracle, and legacy databases via middleware engines (such as MuleSoft, Dell Boomi, and Apigee), we understand the technical bottlenecks developers encounter. Writing Apex wrapper classes, mapping dynamic arrays, escaping protected keywords, and writing comprehensive test mocks can take hours of manual, repetitive work. We created json2apex to automate this overhead, generating production-grade, compiler-compliant code in seconds.

Our Core Engineering Principles

1. Complete Local Security (Zero Server Retransmission)

We recognize that integration payloads often contain highly sensitive corporate data, personal identifiable information (PII), or financial indicators. To maintain a strict security boundary, json2apex executes entirely client-side in your browser. Your JSON inputs, schemas, and configurations are never transmitted to our servers, nor do we store any of your data. The entire generation process is handled locally by JavaScript.

2. Alignment with Multi-Tenant Governor Limits

In a shared multi-tenant cloud environment, resources are guarded by governor limits. Recursive deserialization using untyped maps in interpreted Apex consumes significant CPU cycles. The wrapper classes generated by json2apex are optimized to execute type-safe deserialization at the platform's native C++ VM layer, preserving valuable CPU time for downstream business logic.

3. Standardized keyword and AST Exception Isolation

Apex wrapper structures must compile cleanly. Our converter automatically maps reserved keywords (e.g. class, object, limit) to sanitized variable names (e.g. _class, _object, _limit) and generates key-replacement logic. Additionally, the integrated AST validation automatically repairs syntax errors (such as missing brackets, quotes, or trailing commas) before mapping the schema.

How to Use json2apex

Getting your Apex class takes only three simple steps:

  1. Paste your raw JSON payload directly into the input editor or load a JSON file.
  2. Define your top-level Apex Class Name and click settings to toggle parsing options.
  3. Download the generated wrapper class and test class as a ZIP bundle, or copy individual segments directly to your clipboard.