How to open a JSON file online
Three steps, a few seconds, no software.
Open your .JPN file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .JPN 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 .JPN file?
The most common data format on the web.
A .jpn file on Windows is almost always noise.jpn, the Japanese stop-word list that Windows Search and SQL Server Full-Text Search use to skip common words during indexing. Open it with any text editor such as Notepad. Less commonly, the extension belongs to a PhotoModeler project file or an Unreal Engine localization file.
Programs that open .JPN files
| Full name | Windows Japanese Noise-Word List File |
|---|---|
| Developer | Microsoft Corporation |
| First released | Windows NT 4.0 / Windows 2000 era (late 1990s) |
| Category | Text & Code |
| MIME type | text/plain |
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Every viewer is free to use.
Frequently asked questions
Is my .JPN file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .JPN 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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