Transform.tools
Convert a sample API response into a draft TypeScript interface.
Visit the official websiteWhat it drafts
Paste a sample API JSON response and get a draft TypeScript interface to edit by hand. Frontend developers integrating JSON APIs use it as a starting declaration, not a finished type model.
Null fields can be inferred as any, and Copy can return stale code when the current input is in an error state. Review null inference and current-input errors before copying generated declarations into a project.
Our tested workflow
Transform.tools review: turn API JSON into TypeScript, then fix the gaps
A frontend API integration test: null becomes any, error-state Copy returns stale code, and a bounded 131135-byte fixture converts.
Actual desktop test screenshot from the linked review. Read that article for the test date, method and unverified dimensions.