JSON Viewer & Editor

JSON Viewer Editor — A Fast JSON Toolkit

A fast, privacy-first JSON viewer and editor built for developers and data-focused users. View, edit, validate, and format JSON — completely offline.

View & Edit JSON
• Code editor with syntax highlighting
• Collapsible tree view for easy navigation
• Create new files or edit existing ones
• Copy or share instantly

Import JSON Easily
• Paste from clipboard with instant validation
• Load JSON from any URL or API endpoint
• Built-in templates: API response, config, mock data
• Start from scratch with empty files

Powerful JSON Tools
• Validate — detect syntax errors instantly
• Format — beautify with clean indentation
• Minify — compress JSON for production
• Escape — escape or unescape strings

Format Conversion
• JSON ⇄ YAML
• JSON ⇄ XML
• Ideal for API testing and data transformation

File Management
• Save and organize multiple JSON files
• Quickly search and reopen recent files

Privacy First
• No account required
• No tracking or analytics
• Works fully offline
• Your data stays on your device

Whether you’re debugging API responses, editing config files, or learning JSON, JSON Viewer Editor keeps your workflow fast and simple.