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JSON Formatter Plus

Format, explore, and clean up JSON right inside VS Code. Paste raw JSON or CSV, convert it in one click, and browse the result as a collapsible tree or a sortable table — with configurable indentation, UTF-8 preservation, and inline error diagnostics.

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JSON Formatter Plus
Highlights

What you get out of the box

Convert & Explore Panel with Tree and Table Views

Inline Validation with Duplicate Key Detection

CSV to JSON Conversion & Key Sorting

Overview

Built to deliver a smooth, focused experience.

JSON Formatter Plus brings a complete JSON workbench into your editor — no browser tabs, no online formatters, no data leaving your machine.

Convert & Explore Panel

A split-screen workspace with an input area, a one-click conversion control, and a live output view.

  • Tree view with expandable nodes plus type and count summaries
  • Interactive table view for arrays of objects, with inline expansion
  • Expand All / Collapse All and one-click copy of the formatted JSON

Formatting

  • Format the active document or just the selection, with configurable indentation
  • Minify JSON down to a compact single line
  • Optional format-on-save

Validation & Diagnostics

  • Inline errors with exact line and column references
  • Duplicate key detection surfaced in the Problems panel
  • Live status bar showing validity and file statistics

Data Transformation

  • Sort keys alphabetically, ascending or descending, with a recursive option
  • Strip empty values — null, empty strings, empty objects and arrays
  • Convert CSV to JSON from a selection or a whole file

Built for Everyday Use

  • Configurable keybindings for common operations
  • Command Palette, right-click context menu, and a status bar button
  • Cross-platform: Windows, macOS, and Linux
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