JSON Viewer: Format & Explore JSON Data Online
Open any JSON file or API response in your browser and read it as a clean, formatted data grid. Upload a .json file to expand nested objects, flatten arrays, and preview every field before turning it into a chart.
Try it free →No signup · No data stored · 100% free
How it works
- 1
Upload your JSON file
Drop any .json file. No account required.
- 2
AI-assisted conversion
Our engine reads your data, detects column types, and picks the best chart for each pattern.
- 3
Visualize your graphs
Interactive charts are ready instantly. Explore trends and share insights.
Everything you need, nothing more
No account needed
Upload instantly, zero signup.
Privacy first
Files are never stored on our servers.
Any device
Works on mobile and desktop.
AI-powered
Smart chart selection from your data.
Common use cases
Read API responses
Paste or upload a raw API response and read it as a clean, indented tree instead of a single unbroken line. Expand nested objects to find the field you need fast.
Debug config & logs
Open a JSON config file or structured log to check values and spot a missing bracket or wrong key. Formatting makes structural mistakes obvious at a glance.
Explore before charting
Preview nested arrays and objects to decide which fields are worth plotting. See the shape of the data first, then turn the numeric parts into a chart.
Tips & best practices
The viewer accepts any valid JSON — a single object, an array of objects, or deeply nested structures — and lays it out with indentation and collapsible nodes. For charting, an array of flat objects with the same keys works best, since each object becomes a row and each key a column. Deeply nested data is readable but may need flattening before it plots cleanly; pick the array you care about and preview that. If a file won't load, a trailing comma, single quotes, or an unescaped character is the usual culprit — strict JSON needs double quotes around keys and string values. Everything is parsed in your browser, so large or private responses never leave your machine.
Ready to visualize your data?
Upload your JSON file and see your data come alive instantly.
Try it free →Frequently asked questions
Q.What does this site do & how can I convert my JSON files to graphs?
This site is a free, instant online tool to view, read, and convert JSON (.json) files into interactive charts. Simply upload your file in the box above, and our system will automatically analyze your data structure, detect column types, and generate chart recommendations which you can customize and export.
Q.What file types are supported?
.json files are supported.
Q.What chart types can it generate?
Bar, line, area, pie, scatter, and trend charts — chosen automatically based on your data.
Q.Is it free?
100% free. No signup, no credit card, no limits.