How to open a JSON file online
Three steps, a few seconds, no software.
Open your .JSON file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .JSON 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 .JSON file?
The most common data format on the web.
A JSON file is a plain-text data file in JavaScript Object Notation format, used by web APIs, app configurations, and data exports. Any text editor opens it (Notepad on Windows, TextEdit on Mac), though VS Code or Notepad++ are more comfortable for anything non-trivial. The file itself is safe to open; the data inside may be sensitive (tokens, personal exports).
Programs that open .JSON files
| Full name | JavaScript Object Notation file |
|---|---|
| Developer | Specified by Douglas Crockford (2001); standards: ECMA-404, IETF RFC 8259 |
| First released | 2001 (json.org); first IETF spec RFC 4627 (2006); current RFC 8259 / ECMA-404 (2017) |
| Category | Text & Code |
| MIME type | application/json |
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Every viewer is free to use.
Frequently asked questions
Is my .JSON file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .JSON 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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