JSON Editor Two-way JSON editing — Text, Tree, and Table views stay in sync. Edit in either pane, both update instantly. Two-Way Sync Tree Editor Table Edit 100% Local

JSON Editor Two-way sync. Edit in any view. New: Smart timestamp conversion — Convert timestamps in JSON with one click.

100% Local Upgrade
Paste your JSON here...
Drag & drop a .json file here
or paste JSON / click Upload File above
Drop .json file here

Your data will appear here

1Paste JSON or drag a file
2Edit in either pane — both stay in sync
3Format, copy, or download your JSON

JSON Editor — Best Practices

Validate Before Saving

Click Beautify before downloading. The status bar shows errors with line and column numbers if your JSON is invalid. Fix syntax errors early to avoid broken files.

Two-Way Editing

Both panes are editable. Edit in the left Text view, the right Table/Tree updates instantly. Edit cells in the right Table, the left Text updates with formatted JSON.

Search & Replace

Press Ctrl+F to search within the Text editor. Useful for finding specific keys, values, or field names in large files.

Backup Original First

Before editing important JSON, use Copy or Download to save the original. The editor runs entirely in your browser, but undo history is lost on page reload.

JSON Editor — Exclusive Features

Two-Way Sync

Edit in either pane and the other updates instantly. Left pane: Text & Table. Right pane: Table, Tree, & Text. Both support undo/redo, search, and syntax highlighting.

Dual-Pane View

Work in whichever view fits your task. Tree for navigation, Table for spreadsheets, Text for raw editing. Hide the right pane anytime to focus on one view.

Real-Time Validation

Syntax errors are highlighted instantly in both panes. The status bar shows the exact line and column. Format and minify safely — invalid JSON is rejected with a toast.

JSON Editor — FAQ & Troubleshooting

How do I edit JSON online?

Paste your JSON into the left editor pane or drag and drop a .json file. Both panes are fully editable — edit in either one and the other updates instantly. Click Download to save the file. All processing happens in your browser — no signup required.

Does the JSON editor support syntax highlighting and validation?

Yes. The editor has JSON syntax highlighting, bracket matching, and real-time validation. Syntax errors are shown in the status bar with the exact line and column number.

Can I view JSON in tree view or table view?

Yes. Both panes support multiple view modes. The left pane has Text and Table views. The right pane has Table, Tree, and Text views. Switch views at any time — your content is preserved.

What is two-way sync between the panes?

The two editor panes are fully synchronized. Edit in the left pane and the right updates instantly. Edit in the right pane (Table, Tree, or Text) and the left Text view updates instantly. You can work in whichever view fits your task best.

How do I format or minify my JSON?

Click Beautify in the toolbar to format with proper indentation. Click Compact to compress to a single line. Both operations validate JSON first — if your input has errors, a toast will show the error and the operation is aborted.

Is my JSON data safe in the editor?

Absolutely. All processing happens 100% in your browser. Your JSON data is never uploaded to or stored on any server. No backend, no tracking, no account required.

Can I download the edited JSON as a file?

Yes. Click Download to save the JSON as a .json file. You can customize the filename in the toolbar. Use Copy to copy the JSON to your clipboard.