How to open a JSON file online
Three steps, a few seconds, no software.
Open your .JAD file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .JAD file opens as a tidy, foldable tree, with the exact line of any error pointed out.
Search, copy or download
Search keys and values, copy any path or value, switch to a table, or download a clean copy.
What is a .JAD file?
The most common data format on the web.
A JAD file is a small plain-text descriptor for a J2ME (Java ME) mobile app or game. It always pairs with a .jar file that holds the actual program code. To read it, open it in any text editor. To run the app, you need the matching .jar and a J2ME emulator such as KEmulator (PC) or J2ME Loader (Android).
Programs that open .JAD files
| Full name | Java Application Descriptor |
|---|---|
| Developer | Sun Microsystems (now Oracle) - Java ME / MIDP specification |
| First released | 2000-2002 (Java ME / MIDP 1.0; J2ME mobile applications) |
| Category | Text & Code |
| MIME type | text/vnd.sun.j2me.app-descriptor |
Related viewers
Every viewer is free to use.
Frequently asked questions
Is my .JAD file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .JAD file is invalid. Can you fix it?
We show the exact line and column of the first error. For common problems like comments, trailing commas, single quotes or Python-style True/False/None, click Try to repair and download the fixed file.
How large can the file be?
Up to 50 MB. The tree only builds the branches you open, so even multi-megabyte files stay responsive.
What is JSONPath?
A path like $.orders[3].customer.email that points to one value inside the data. Click any node to see its path and copy it for code, jq or your API docs.
Can I see my data as a table?
Yes. Any array of objects can be shown in the Table view and downloaded as CSV.
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