Changelog

Track the latest updates and improvements for Compare JSON.

v0.5.1

Mobile Layout: The home and result pages now adapt to small screens — below 980px the side-by-side editors stack vertically, with more compact spacing and editor heights for a better mobile experience.

Progressive Web App: Compare JSON is now installable — add it to your desktop from the browser's install prompt and use it like a native app.
Full Offline Support: Once installed, the app works completely offline, including the code editors. See Install & Offline Use for details.

Git Diff View: The result page now supports switching to a Git Diff view, showing line-by-line text differences in a side-by-side diff editor.
Result Page Toolbar: The back button and compare settings moved to a top toolbar that stays visible in both views, and the settings button now shows a text label.

Skills: Added Compare JSON Agent Skill so Claude Code, Codex CLI, OpenCode, Cursor, and other AI agents can invoke the CLI on demand.
MCP: Added Compare JSON MCP Server, letting AI assistants call JSON comparison capabilities through the Model Context Protocol.
Result Diff Navigation: Clicking a diff entry on the result page now scrolls the corresponding diff line into view.
Result Data Loading: The result page now supports loading comparison content from a URL or Base64-encoded data.

Array Matching Strategies: Choose from By Index, LCS, or Unordered matching modes.
Additional Compare Options: Added tolerance options such as ignoring key/value case and treating numeric strings as numbers.
Persistent Compare Settings: Compare options are automatically saved to LocalStorage and restored on page reload.
JS Object Auto-Conversion: Pasting a JavaScript object into the editor now automatically converts it to JSON.

Structural Comparison: Recursively compares JSON objects while ignoring key order and formatting differences.
Multiple Input Methods: Edit, paste, upload files, or fetch JSON directly from a URL.
Visual Diff Results: Displays diff counts and types, filters diffs by type, and highlights changes with color-coded code.