Owly is a free web-based tool for viewing, inspecting, and working with JSON data. It provides multiple view modes (tree, flat, raw), AI-powered features for conversion and error fixing, and powerful export capabilities.

Yes, Owly is completely free to use. All core features are available without cost. AI features may have usage limits depending on API configuration.

Is my JSON data secure?

Yes! All JSON parsing and viewing happens entirely in your browser (client-side). Your data never leaves your device unless you explicitly export or copy it. AI features may send data to AI services, but no data is stored permanently.

What features does Owly offer?

Owly offers multiple view modes (tree, flat, raw), AI-powered JSON error fixing, image to JSON conversion, JSON schema explanation, TypeScript type generation, JSON to CSV export, real-time validation, search and filter, and multiple layout modes.

Can I convert images to JSON?

Yes! Upload an image (drag-and-drop or use the file picker), then click 'Convert to JSON' in the AI Assistant panel. The AI will analyze the image and extract structured data. This works great for receipts, forms, tables, and documents.

Now with GPT-4 Turbo support

Free JSON Viewer
Online - Owly

The best free online JSON viewer, editor, and validator with AI-powered features. Visualize JSON in tree, flat, or raw views. Fix errors automatically, convert images to JSON, export to CSV, and generate TypeScript types.

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Watch how Owly works

Powerful JSON Viewer Features

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Multiple JSON View Modes

Switch between interactive tree view, flat key-value list, and syntax-highlighted raw JSON formats. Choose the view that works best for your JSON data structure.

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AI-Powered JSON Tools

Convert text or images to JSON automatically, fix JSON syntax errors with AI, explain JSON schemas, and generate TypeScript types from your JSON structure.

Advanced Search

Search through JSON with instant highlighting. Navigate matches quickly with keyboard shortcuts and regex support.

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Node Inspector

Inspect any node with detailed information including path, type, value, and related properties for deep debugging.

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Export & Share

Export JSON, CSV, or copy data to clipboard. Perfect for data analysis and sharing results with teammates instantly.

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Flexible Layouts

Choose from three-column, two-column, or tabbed layouts. Resize panels to fit your workflow and monitor size.

Why Choose Owly?

The most trusted companion for developers working with data.

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100% Free Tool

No hidden costs, no premium walls. Use all features without limitations, forever.

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Privacy-First

Processing happens in your browser. Data never leaves your device. No server storage.

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Fast & Reliable

Optimized for performance. Handles large JSON files efficiently with lazy rendering.

How to Use Owly - Quick Start Guide

Paste or Load JSON

Paste JSON directly into the editor or load from a file. Drag and drop JSON files for instant loading. Our JSON validator will automatically check for syntax errors.

Explore Your JSON Data

Navigate the interactive JSON tree view, search for specific keys or values, and inspect any node in the detailed inspector panel. Switch between tree, flat, and raw views.

Use AI-Powered Features

Fix JSON errors automatically, convert images to JSON, explain JSON schemas, or generate TypeScript types with AI assistance. Export to CSV or copy formatted JSON.

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Perfect For These JSON Tasks

Whatever your JSON workflow, Owly has you covered.

JSON Validator

Validate JSON syntax and find errors instantly with detailed error messages.

JSON Formatter

Beautify and format JSON with proper indentation and syntax highlighting.

JSON Parser

Parse and visualize complex nested JSON structures with ease.

JSON to CSV

Convert JSON objects and arrays to CSV format for data analysis.

Data Conversion Tools

Powerful tools to convert and transform your data. All tools are free, secure, and work entirely in your browser.

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Excel to JSON Converter

Convert Excel files (.xlsx, .xls) to JSON format instantly. Upload your spreadsheet and get structured JSON data in seconds.

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JSON to Excel Converter

Convert JSON to Excel (.xlsx) instantly. Paste JSON or upload a .json file and download a clean spreadsheet with optional flattening for nested fields.

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JSON Diff Tool

Compare two JSON files and clearly see added fields, removed fields, and modified values. Perfect for API version changes and config updates.

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JSON Merger & Splitter

Merge multiple JSON files into one, or split large JSON by item count or keys. Useful for migrations, batch jobs, and test data preparation.

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JSON Schema Generator

Paste sample JSON and generate a JSON Schema automatically. Great for API contracts, validation rules, and documentation.

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JSON Validator & Formatter

Validate JSON instantly with clear line/column errors, then beautify or minify valid JSON for daily developer workflows.

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Documentation & Help

Find answers and master the tool with our guides.

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Getting Started

Learn the basics of Owly

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All Features

Comprehensive guide

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AI Capabilities

Powered features

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Shortcuts

Speed up your flow

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FAQ

Common questions

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About Us

Our mission

Best Free JSON Viewer Online - Owly

Owly is the best free online JSON viewer, editor, and validator tool available. Whether you're a developer debugging API responses, a data analyst working with JSON datasets, or a QA engineer validating JSON payloads, our tool provides everything you need to work with JSON data efficiently.

Key Features of Our JSON Viewer

JSON Tree View: Interactive hierarchical view with expandable and collapsible nodes. Perfect for exploring nested JSON structures.
JSON Flat View: Flat list of all JSON paths and values. Quickly find specific keys in large JSON files.
JSON Raw View: Syntax-highlighted formatted JSON. Easy to read and copy.
JSON Validator: Real-time JSON validation with detailed error messages showing line and column numbers.
JSON Formatter: Beautify JSON with proper indentation. Format minified JSON for better readability.
JSON Minifier: Compress JSON by removing all whitespace. Reduce file size for production use.
AI-Powered JSON Tools: Fix JSON errors automatically, convert images to JSON, explain JSON schemas, and generate TypeScript types.
JSON Inspector: Detailed inspection panel showing key paths, data types, values, and related properties.
JSON to CSV: Convert JSON objects and arrays to CSV format for data analysis in Excel or other tools.
Search and Filter: Powerful search functionality to find specific keys or values in large JSON files.

Common Use Cases

API Development: Debug and inspect JSON API responses and request payloads
Data Analysis: Explore JSON datasets and export to CSV for analysis
QA Testing: Validate JSON structure and content in API testing
Data Conversion: Convert images, tables, or text to structured JSON format
Code Generation: Generate TypeScript interfaces from JSON structures
JSON Formatting: Beautify or minify JSON for different use cases

Start using Owly today - it's completely free, requires no signup, and works entirely in your browser. No installation needed, just open the app and start working with your JSON data.

Ready to simplify your JSON workflow?

Join thousands of developers who use Owly daily for their data needs.

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