JSON Diff Tool Compare two JSON documents side by side with semantic diff highlighting and change-only filtering. Diff Compare Side-by-side Semantic

JSON Compare ToolSide-by-Side Semantic Diff Viewer

100% Local Upgrade
Drag & drop a .json file here
or paste JSON / click Upload above
Drag & drop a .json file here
or paste JSON / click Upload above
Stats
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Load both sides to compare

JSON Compare — Best Practices

Fix Syntax Before Comparing

Validate JSON with our JSON Editor or JSON Repair tool to fix trailing commas, single quotes, and unquoted keys before running a diff.

Monitor API Changes with Semantic Diff

Track API response changes over time. Semantic diff detects structural shifts — additions, deletions, type mismatches — that text-based diff tools miss entirely.

Export Diff Results for Audits

Download structured diff reports as CSV, Excel, or Markdown tables. Each change includes the JSON path, old value, new value, and change type for traceable audits.

Privacy-First JSON Comparison

All processing runs 100% in your browser. Your JSON data is never sent to any server, never stored, never logged. No signup required.

JSON Compare — Exclusive Features

Diff Summary Statistics

See at a glance how many additions, deletions, modifications, and type changes were found in your JSON compare. Instant feedback with color-coded counts.

Export Diff to CSV, Excel & Markdown

Export structured JSON diff results as CSV, Excel (.xls), or Markdown tables. Each entry includes Change Type, JSON Path, Old Value, and New Value for clear auditing.

100% Browser-Based JSON Compare

Your JSON data never leaves your computer. All semantic diff processing runs locally — no server upload, no storage, no tracking. Completely private.

JSON Compare — FAQ & Troubleshooting

How to compare two JSON files online?

Paste or drag-drop each JSON into the left (Old) and right (New) panels. Comparison runs automatically — additions in green, deletions in red, modifications in yellow. 100% browser-based.

What is the difference between JSON Diff and JSON Compare?

JSON Diff is line-by-line text comparison; JSON Compare (semantic comparison) understands JSON structure. A semantic compare tool detects changes regardless of key order or formatting.

How to find differences between two JSON objects?

Paste both JSON objects. The tool scans every key recursively — detecting new keys, removed keys, changed values, and type mismatches.

How to compare JSON API responses for changes?

Copy the old API response (left) and new response (right). Instantly see all differences highlighted by JSON path — ideal for regression testing.

Can I compare nested JSON objects with this tool?

Yes — supports deeply nested JSON. Each difference is reported with its full JSON path (e.g., $.data.users[2].address.city).

How to export JSON diff results to a table or CSV?

Click Export > CSV, Excel, or Markdown in the Stats panel. Download includes Change Type, JSON Path, Old Value, New Value columns.

What does semantic JSON diff mean?

Semantic diff understands JSON structure rather than comparing text line-by-line. It ignores whitespace, indentation, and key ordering — correctly identifying type changes.

Is my JSON data safe with this diff tool?

Yes. All comparison runs 100% in your browser. Your data is never sent to any server, never stored, never logged.