All Tools
OpenAPI Viewer
Render and explore OpenAPI / Swagger specifications with an interactive UI. Paste YAML or JSON.
All processing happens in your browser. Your data never leaves your device.
How to Use OpenAPI Viewer
- 1Paste or type your input in the left panel.
- 2Click Process or use the keyboard shortcut ⌘↵.
- 3View the result in the output panel. Use Copy to copy to clipboard or Download to save as a file.
This tool processes data locally in your browser. Nothing is sent to external servers.
Examples
Example input
# Example for OpenAPI Viewer
# Paste your content in the input panel above to get started.Frequently Asked Questions
What formats are supported?
OpenAPI 3.0 and 3.1 in both YAML and JSON formats are supported.
Do I need to upload a file?
No. Paste your spec directly into the text area.
Can I try API endpoints?
The viewer displays endpoints and schema but does not execute requests.
Is my spec data stored?
No. Everything runs in your browser.
Does it support Swagger 2.0?
Swagger 2.0 (OpenAPI 2.0) support is included.