A collection of free, fast, browser-based JSON tools for developers, testers, and data engineers.
All tools work locally in your browser — your data never leaves your machine.
🌐 Official Website: https://jsonviewertool.com
- Available Tools
- Example Usage
- Privacy & Security
- Who Is This For?
- Why JSONViewerTool?
- Feedback & Suggestions
View, format, and prettify JSON with syntax highlighting. 👉 https://jsonviewertool.com
Validate JSON and instantly identify syntax errors. 👉 https://jsonviewertool.com/json-validator
Convert JSON data into CSV format for Excel and spreadsheets. 👉 https://jsonviewertool.com/json-to-csv
Convert CSV files into structured JSON objects. 👉 https://jsonviewertool.com/csv-to-json
Decode JWT tokens locally and inspect header, payload, and signature. 👉 https://jsonviewertool.com/jwt-decoder
Minify JSON to reduce file size for production use. 👉 https://jsonviewertool.com/json-minifier
Convert between JSON and YAML formats easily.
👉 https://jsonviewertool.com/json-to-yaml
👉 https://jsonviewertool.com/yaml-to-json
Convert between JSON and XML formats easily.
👉 https://jsonviewertool.com/json-to-xml
👉 https://jsonviewertool.com/xml-to-json
Generate UUID (v4) values instantly. 👉 https://jsonviewertool.com/uuid-generator
Validate JSON
- Paste JSON into the editor
- Click validate
- Fix errors instantly
Convert JSON to CSV
- Paste JSON data
- Convert to CSV
- Copy or download for Excel
- No file uploads
- No server-side processing
- No tracking of JSON data
- Everything runs locally in your browser
- Software Developers
- Backend & Frontend Engineers
- QA / Automation Engineers
- Data Analysts
- Students learning JSON & APIs
- Fast & lightweight
- Clean and distraction-free UI
- No login required
- Completely free to use
- Works on desktop & mobile
Have an idea for a new tool or improvement?
Open an issue or reach out via the website.
🔗 Website: https://jsonviewertool.com
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