Inspect private JSON without uploading it.

Why use an offline JSON viewer?

API responses, customer exports, production logs, and configuration files can contain data that should not be pasted into a web service. JSON Analyzer reads ordinary files on your device and needs no account or cloud workspace.

More useful than syntax highlighting

• See nested structure as contained cells or a conventional tree.
• Flatten objects and arrays into spreadsheet columns.
• Search text, filter columns, and query by structure.
• Edit scalar values with undo and redo.
• Validate against JSON Schema and infer TypeScript or schema shapes.
• Export filtered results to XLSX, CSV, Markdown, or JSON.

Browser trial, native workflow

The online trial runs the same browser build and processes files locally in the tab. The desktop app adds native file opening and saving for a permanent offline workflow.

Optional AI stays optional

Viewing, searching, querying, filtering, and exporting do not need AI. The two AI-assisted features use your own Anthropic key and show the request for approval before sending it.