JSON Viewer
Explore big JSON files comfortably: expand only what you need and search across keys and values.
Runs in your browser. Nothing is uploaded Free, no sign-up Works on mobile
Open a JSON file (large files are fine)
or drag and drop here
How to use JSON Viewer
- Open a .json file or paste JSON.
- Click ▸ to expand objects and arrays.
- Search to auto-expand matching paths.
Frequently asked questions
How big can the file be?
Tens of megabytes usually work well. Only the parts you expand are drawn on screen.
Can I format the JSON?
Use “Copy formatted”, or the JSON Formatter tool for formatting and validation.
Are my files uploaded?
No. Files are read and processed by your browser on your own device, so there is no upload wait and no size limit set by a server.
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