Side-by-Side Text & JSON Diff Checker
Compare text, code, configs, or JSON payloads with word-level change highlighting. Fast, secure, and 100% client-side.
Diff Comparison
| # | Original | # | Modified |
|---|---|---|---|
| { | { | ||
| "database": { | "database": { | ||
| "host": "db-prod-cluster-01.internal", | "host": "db-prod-cluster-02.internal", | ||
| "maxConnections": 50, | "maxConnections": 100, | ||
| "port": 5432, | "port": 5432, | ||
| "ssl": true | "ssl": true | ||
| }, | }, | ||
| "environment": "production", | "environment": "production", | ||
| "features": { | "features": { | ||
| "darkMode": false, | "aiInsights": true, | ||
| "darkMode": true, | |||
| "rateLimiting": { | "rateLimiting": { | ||
| "enabled": true, | "enabled": true, | ||
| "maxRequestsPerMinute": 60 | "maxRequestsPerMinute": 120 | ||
| }, | } | ||
| "realtimeAnalytics": true | |||
| }, | }, | ||
| "projectId": "marketpulse-prod", | "projectId": "marketpulse-prod", | ||
| "regions": [ | "regions": [ | ||
| "us-east-1", | "us-east-1", | ||
| "eu-central-1" | "eu-central-1", | ||
| "ap-southeast-1" | |||
| ], | ], | ||
| "version": "1.4.0" | "version": "1.5.0" | ||
| } | } |
Everything you need to know about Side-by-Side Text & JSON Diff Checker
A high-performance visual diff utility for programmers, DevOps engineers, and writers. Compare source code, text files, API payloads, and config files with instant word-level change detection.
✓How to Use This Tool
Input Original & Modified Text
Paste your base content in the left panel and your changed version in the right panel. You can also drag and drop local files directly.
Select Diff Mode & Granularity
Switch between Split Side-by-Side and Unified Inline views. Choose word-level or character-level highlighting for granular inspection.
Format & Sort JSON Payloads
When comparing JSON data, enable 'Sort Keys' to eliminate false positives caused by differing dictionary property orders.
Review Changes & Export
Inspect clean color-coded additions (green) and deletions (red). Copy the unified patch or formatted result to your clipboard.
Core Engineering Highlights
Highlights exact words and symbols modified within altered lines, not just broad full-line blocks.
Recursively alphabetizes JSON object keys before comparing to isolate genuine data differences.
Diff calculations occur exclusively in browser RAM. No text, tokens, or private code are transmitted.
Zero Server-Side Storage • 100% Client-Side Processing
Your payloads, source files, SQL queries, and tokens are processed locally within your browser using WebAssembly and standard JavaScript APIs. No data is stored, logged, or sent across our network.