Open Giant JSON Files on Your Phone

Built for Android developers and data analysts who need to inspect massive JSON files up to 100GB on mobile. Our streaming parser formats and browses big JSON smoothly — searchable, structured, and crash-free, even when your file is larger than your device's memory.

Results update live as you type — no button needed. The Example button fills a sample input.

Why use Giant JSON Viewer?

Streaming parser handles JSON files up to 100GB without loading everything into memory

Formats and pretty-prints giant JSON into a clean, collapsible tree view on Android

Instant search and filter across millions of keys and values

No memory crashes — browse huge files smoothly on phones and tablets

Works offline and keeps your data on-device for privacy

FAQ

Can this really open a 100GB JSON file on Android?

Yes. The viewer uses a streaming JSON parser that reads the file in chunks instead of loading it all into memory, so it can handle files up to 100GB without crashing your device.

Will it work on my phone with limited RAM?

Absolutely. Because parsing is streamed, memory usage stays low even for giant files. You can browse, search, and format big JSON on most modern Android phones and tablets.

Is my JSON data uploaded to a server?

No. All parsing and formatting happens on your device. Your JSON never leaves your phone, keeping sensitive data private.

What JSON formats are supported?

Standard JSON, including nested objects, arrays, and large numbers of records. The formatter pretty-prints and validates your JSON as you browse.

Example input

Try it with this sample — paste it into the box above:

{"users":[{"id":1,"name":"Alice","roles":["admin","dev"]},{"id":2,"name":"Bob","roles":["viewer"]}],"meta":{"total":2,"page":1}}

How to use Giant JSON Viewer

  1. Enter or paste your data into the Paste your JSON box above.
  2. The result appears instantly in the Formatted JSON box — everything runs in your browser, nothing is uploaded.
  3. Use Copy or Download to keep the result, or Example to load a sample first.

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