Advanced JSON Pattern Editor

The editor workspace is now much larger, the highlighted preview is cleaner, and the main focus mode gives you only the editor, validate actions, and error tools when you want to work without distractions. Use #code links, live validation, pattern tools, schema export, and the JSON tree exactly as before.

Large editor workspace Focused full screen mode Stronger line + column errors Live validation Pattern detection Schema export

Editor Workspace

The editor now takes priority. The left side is your full JSON workspace. The right side stays dedicated to validation, highlighted preview, and the exact error line and column.

Editor first layout Error-only focus mode Live source context
json-editor.json
Waiting Lines: 0 Longest line: 0 Chars: 0
Validation state
Waiting for validation
Editor + validate + errors focus
Error location
No error
Validate the JSON to show line and column details.
JSON status
Unknown
Top-level structure and validation state update live while you edit.
Nearby source line
No syntax error context available yet.

Highlighted Preview

Exact error line marker and column highlight
Exact error gutter Column marker 


















Suggestions / Errors

Validation messages and correction proposals










Ready

Run validation or suggestion tools to see analysis.















          Supported URL loading: ?json=... ?sample=... ?jsonUrl=... ?sampleUrl=... and sharing with
          #code=.... Remote loading depends on the target URL allowing fetch access.
        












Status

Structure summary and quick diagnostics











Top Level


-






Keys


0






Characters


0






Focus Mode


Off
















Sample JSON + Detected Schema

Infer a pattern from sample JSON, then edit or export the schema



















sample.json




















schema.json

























Detected Pattern

Human-readable inferred structure





No pattern detected yet.










JSON Schema Export

Standard JSON Schema generated from the detected pattern or schema editor












No JSON Schema exported yet.










JSON Tree View

Expandable tree view of the current JSON document







Tree view will appear here after validation.










Corrected Preview

Best-effort auto-corrected JSON











No corrected JSON generated yet.