CSV Viewer Online to Open, View, and Edit Any CSV
This CSV viewer online opens, displays, and edits CSV files in a clean, spreadsheet-like table right in your browser. Drop in a file, paste text, or load the sample, and your data lands in a sortable, searchable grid with no software to install.
It is built for developers inspecting data exports or API responses, analysts who want to quickly view and clean a file, and anyone who needs to read or edit a CSV without opening Excel or Google Sheets. Multiple delimiters, inline editing, and one-click export are all here.
How to Use the CSV Viewer & Editor
Load your CSV data
Click Upload File to pick a .csv, .tsv, or .txt file — the delimiter is auto-detected. Or paste CSV text from your clipboard when no field is focused, or click Sample Data to explore with example rows.
View, sort, and search
Click a column header to sort ascending, descending, then back to the original order. Type in the search box to filter rows instantly, with matches highlighted. The header row stays fixed as you scroll through large datasets.
Edit cells and structure
Click any cell to edit it — press Enter to save and move down, Tab to move right, or Esc to cancel. Double-click a header to rename it, and use Add Row / Add Column or the hover delete buttons to reshape your table.
Export your result
Click Download to save the edited data as a CSV file, or Copy to put the full CSV text on your clipboard. Both exports use your selected delimiter.
Features
Three Ways to Import
Upload a CSV, TSV, or TXT file, paste CSV text from your clipboard, or load built-in sample data to get started.
Auto-Detect Delimiter
Comma, tab, semicolon, and pipe are detected on upload, and you can switch the delimiter manually from the toolbar.
Spreadsheet-Like Table
Your data renders with row numbers, sticky column headers, and zebra striping so big files stay easy to read.
Smart Column Sort
Click a header to cycle ascending, descending, and original order. Numeric columns sort by value, not alphabetically.
Search & Highlight
A global search box filters rows across every column instantly and highlights each matching keyword.
Inline Cell Editing
Edit any cell directly in the table and move around with Enter, Tab, Shift+Tab, and Escape — no separate form.
Rename Headers
Double-click any column header to rename it on the spot, then press Enter to confirm or Escape to cancel.
Add & Delete Rows / Columns
Insert empty rows or columns from the toolbar, and remove any row or column with its hover delete button.
Resizable Columns
Drag the right edge of any header to widen a column when its content is truncated, so you can see full values.
Download or Copy
Save your edited data as a CSV file or copy the entire CSV text to your clipboard with one click.
Live Status Bar
A status bar shows the row count, column count, data size, and the position of the cell you are editing.
Private by Design
All parsing and editing run in your browser. Files never leave your device and no usage data is collected.
Frequently Asked Questions
How do I open a CSV file online?
Click Upload File and choose your .csv, .tsv, or .txt file, or paste CSV text straight from your clipboard. The file is parsed in your browser and shown as a table right away — no account or install needed.
How do I edit a CSV file without Excel?
Click any cell to edit it inline, double-click a header to rename a column, and use the toolbar to add or delete rows and columns. When you are done, click Download to save the result as a CSV — all without opening Excel or Google Sheets.
Is my CSV data uploaded to a server?
No. All parsing, editing, and exporting happen entirely in your browser. Your files and data never leave your device, and no usage information is collected.
Why does my CSV show garbled or wrong columns?
This usually means the wrong delimiter was detected. Open the Delimiter dropdown and pick the one your file actually uses — for example, choose the semicolon if your data is split by ; instead of commas. The table re-parses immediately.
Is there a file size limit?
Because everything runs in your browser, the practical limit depends on your device's memory. The tool handles files with tens of thousands of rows comfortably; very large files (around 100 MB and up) may feel slower.
How do I sort by a column?
Click a column header to sort ascending, click again for descending, and a third click restores the original order. Numeric columns are compared by value, so numbers sort correctly rather than alphabetically. Sorting works on one column at a time.
Can I undo my changes?
There is no undo button. To revert, re-upload the original file or reload the page. It is a good idea to keep a backup — or download a copy — before making large edits.
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