📰 New post: Visualising API Structure with OpenAPI Visualiser
OpenAPI Visualiser turns an API specification into a browsable path hierarchy, helping you understand its overall “shape”.
I’ve modernised the project with a refreshed UI, endpoint drill-in through Swagger UI, and better performance for large specifications.
https://www.devwithimagination.com/2026/06/07/visualising-api-structure-with-openapi-visualiser/
How do you visualise APIs when designing or reviewing them?

Visualising API Structure with OpenAPI Visualiser
When I am setting out to design a new set of APIs, I generally focus on what the “shape” of the API will look like pretty early on. I like to visualise this, usually starting with a mind-map-like diagram showing the path hierarchy and building up the required operations from there. Trying to visualise this shape once the API specification had been developed wasn’t easy in any Swagger editor I’d come across (a number of years ago now). The same problem applies when trying to get an overall feel for a large API, either from a design or from an…


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