How to open a JSON file online
Three steps, a few seconds, no software.
Open your .CSV file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .CSV 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 .CSV file?
The most common data format on the web.
A CSV file stores tabular data as plain text: one row per line, values separated by commas (or semicolons in European locales). Any spreadsheet opens it: Excel, Google Sheets, LibreOffice Calc. The most common problem is Excel cramming everything into one column or showing garbled characters, both fixed with the import wizard instead of double-clicking.
Programs that open .CSV files
| Full name | Comma-Separated Values |
|---|---|
| Developer | No single owner (in use since the 1970s); documented in RFC 4180 (2005) |
| First released | 1970s (early use); RFC 4180 published 2005 |
| Category | Text & Code |
| MIME type | text/csv |
Related viewers
Every viewer is free to use.
Frequently asked questions
Is my .CSV file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .CSV 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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