CSV Viewer
Open a CSV or TSV file as a table: click headers to sort, filter rows as you type and see per-column types and stats. Handles files up to 20 MB in your browser.
How to use CSV Viewer
- 1Paste CSV or open a file of up to 20 MB.
- 2Click a column heading to sort, or type in Search rows to filter.
- 3Open Show column statistics to see types, empty cells, unique counts and numeric ranges.
What makes it better
- Numeric-aware, stable sorting: 9 sorts before 10 and empty cells go last
- Live search with a count such as 12 of 1,204 rows
- Per-column type, filled and empty cells, unique values, minimum and maximum
- Sticky header, row numbers and a table that scrolls in its own box, with keyboard access
- Large files are read in a background worker and shown 200 rows at a time
About CSV Viewer
CSV Viewer shows a CSV or TSV as a table with a sticky header and row numbers, so you can sort by any column, search across all cells and spot problems quickly. Parsing and statistics run in a background worker, and the table renders 200 rows at a time with a count of how many are still hidden.
Common uses
- Take a quick look inside a big export before importing it anywhere.
- Find the rows that mention a customer, SKU or error code.
- Check which columns are mostly empty or have unexpected text in a numeric column.
- Sort a raw data dump by date or amount without opening a spreadsheet.
Example
Input
city,qty,price Chennai,12,19.5 Pune,40,4 Kochi,2,120 Pune,7, Delhi,15,8.25
Result
5 rows · 3 columns city: text · 4 unique qty: integer · min 2 · max 40 price: number · 1 empty · min 4 · max 120
Good to know
- Only 200 rows are drawn at first; Show 200 more reveals the rest in steps. Sorting and search still work on every row, not just the visible ones.
- Column types are guessed from the values (integer, number, boolean, ISO date, text, or mixed) and are hints only. Nothing in your file is changed, and this page is read-only.
- Unique counts stop at 100,000 distinct values per column and show a plus sign when they reach that. Cells longer than 300 characters are shortened on screen only.
CSV Viewer FAQ
How big a CSV can I open?
Up to 20 MB. Files over about 200 KB are parsed and analysed in a background worker, and only a window of rows is drawn, so the tab stays responsive even with hundreds of thousands of rows.
How does sorting handle numbers and blanks?
Values that look like plain numbers sort by value, so 9 comes before 10, then text sorts naturally, and empty cells always end up last in either direction. Equal values keep their original order.
What do the column statistics show?
For every column: the guessed type, how many cells are filled and empty, the number of unique values and, for numeric columns, the minimum and maximum.
Does the viewer edit or save my file?
No, it is read-only. Use CSV Cleaner to trim, de-duplicate or reorder columns, and the converters to change the format.
Is the file I open sent to a server?
The file is read locally by your browser. It is not uploaded, so confidential exports can be inspected without leaving your machine.