About the CSV Viewer
A CSV attachment on a phone, or a data export you just want to glance at, should not require opening Excel. The viewer parses the file in your browser and shows it as a table with a numbered first column, the header row fixed, and the delimiter detected automatically. Quoted fields, embedded commas and multi-line cells are handled by a full RFC 4180 parser.
The status line reports the row and column count, which is a quick check that an export is complete. Because nothing is uploaded, the viewer is safe for files containing customer or financial data. The Copy button copies the original CSV text; Download saves it unchanged.
For editing or converting the data, the related tools take the same input: CSV to JSON, CSV to SQL and CSV to HTML Table.
How to use
- Upload the CSV file or paste its contents.
- Scroll the table. Change the delimiter if columns did not split correctly.
- Convert it with a related tool if you need another format.
Common questions
- Is my file uploaded to a server?
- No. The file is read by JavaScript in the page and never leaves your device.
- How large a file can it open?
- Tens of megabytes parse quickly; rendering tens of thousands of rows in the table takes a few seconds. For very large files, convert instead of scrolling.
- Can I sort or filter columns?
- Not in this viewer. Use the browser find for values, or convert to JSON and use the JSON tools.
- Why are all my columns in one cell?
- The delimiter was mis-detected. Set it explicitly to semicolon or tab in the toolbar.