A behavior you can inspect
Verify local JSON processing
The application code is designed to process document content inside your browser and exposes a reproducible way to check that boundary.
Application boundary
Typing, paste, local file decoding, parsing, formatting, diagnostics, tree search, repair preview, copy and download run in the page or its same-origin browser worker. No document-content endpoint exists.
Run the canary check
After the page loads, clear the Network log. Enter a unique synthetic canary, then format, minify, inspect Issues and Tree, preview a repair, copy and download. Never use a real secret for this test.
Expected result
The canary should appear in no request URL, header or body and in no Local Storage, Session Storage, IndexedDB or cache request URL. Closing or clearing the session removes document state held by the app.
Limits of the claim
Browser extensions, clipboard managers, endpoint protection, the operating system, developer tools and future hosting logs are outside the application boundary. This verification is evidence about JSONClarity code, not every program on the device.