JSON Reader
Open and read JSON files comfortably — upload, drag and drop, or load from a URL.
Input
Output
Ready
Drop a file to load it
About this tool
Read a JSON file without an editor. Drag a file in, upload it, or paste a URL, and browse the contents as formatted text or an expandable tree.
When you would use it
- Opening a `.json` file you were sent
- Skimming an exported dataset
- Reading a config file on a machine without developer tools
Worked example
export-2026-09.json (2.4 MB)
▾ records [1,204]
▾ 0 {6}
id: "a81f"
created: "2026-09-01T09:14:22Z"
Things worth knowing
- Files opened from your machine are read locally by the browser and are never uploaded.
Questions
Frequently asked
Can it open large files?
Yes. Files are read locally and parsed in a background worker, so multi-megabyte documents open without freezing the page.
Is my data uploaded anywhere?
No. Every tool on JSONWorks runs entirely in your browser using JavaScript. Your input is never sent to a server, never logged and never stored. The simplest proof is to disconnect from the internet — the tools keep working. The site does load Google Fonts and a Google Analytics page-view tag, so you will see those two requests in your network tab, but neither receives anything you type or paste.
Does it work offline?
Yes. JSONWorks is installable as a progressive web app and caches itself on first visit, so every tool keeps working without a connection.
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