Swagger Diff Tool

Old Swagger / OpenAPI URL

New Swagger / OpenAPI URL

How to Compare Swagger and OpenAPI Specifications?

The Swagger Diff Tool is the easiest way to detect breaking changes in your API. Simply upload your old and new OpenAPI (formerly Swagger) specifications to identify added, removed, or modified endpoints instantly.

Why use an API Comparison Tool?

Performance Testing: Quickly identify new endpoints that need load testing scripts.
API Versioning: ensuring your API updates don't inadvertently break existing clients.
Documentation Review: Verify that all planned changes are correctly reflected in the spec.

Our tool supports JSON and YAML formats and works with all versions of OpenAPI (2.0 and 3.0+).