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.