CSV Viewer & Editor

When you upload or drop a file, the tool scans the first line and automatically detects whether the data uses commas, tabs, semicolons, pipes, or colons as separators. You can always override the detected delimiter from the dropdown.

Click the sort icon on any column header to sort ascending or descending. The tool automatically detects whether a column contains numbers, dates, or text, and sorts accordingly — numeric columns sort by value (not alphabetically), so '9' comes before '100'.

The search bar filters rows in real-time across all columns. Only rows containing your search term are displayed. The statistics bar updates to show how many rows matched out of the total.

Open the Find & Replace panel (or press Ctrl+F) to search for specific text across all cells. See a live match count, toggle case sensitivity, and replace all occurrences at once. Matching cells are highlighted in yellow.

Every edit — cell changes, row/column additions, deletions, transpose, trim, and find-replace — is tracked in a 100-level history stack. Use the toolbar buttons or Ctrl+Z / Ctrl+Y keyboard shortcuts to step through changes.

Drag any column header to a new position to reorder your columns. A blue indicator shows where the column will be placed. This is useful for reorganizing data before export.

Hover over the right edge of any column header to reveal a resize handle. Drag it to make columns wider or narrower. Each column can be individually sized for optimal viewing.

Right-click any cell to access quick actions: insert a row below, duplicate the current row, delete a row, insert or delete a column, or copy the cell value to your clipboard.

Datasets with more than 50 rows are automatically paginated. Choose page sizes of 25, 50, 100, 250, or 500 rows. Navigation buttons let you jump to the first, previous, next, or last page.

Export your data as CSV with customizable delimiter, encoding, and line endings, or as an Excel-compatible .xls file using SpreadsheetML format. You can also copy the formatted CSV directly to your clipboard.

Your data is automatically saved to your browser's local storage as you edit. If you close the tab or refresh the page, your data will be restored exactly as you left it.

Click '+ Row' to append a new empty row at the bottom of the table, or '+ Col' to add a new column. You can also insert rows and columns via the right-click context menu. All additions are tracked in the undo history.

Click 'Trim' to remove all leading and trailing whitespace from every cell in the table, including headers. This is useful for cleaning up data that was copied from spreadsheets or databases with inconsistent spacing.

Click 'Transpose' to flip the table so that rows become columns and columns become rows. A 3-row by 5-column table becomes a 5-row by 3-column table. Useful for restructuring data or switching between row-oriented and column-oriented layouts.

Click 'Dedup' to remove duplicate rows from the table. Two rows are considered duplicates if every cell value is identical. Only the first occurrence of each unique row is kept.

Enable 'Row #' to display a numbered column on the left side of the table for easier navigation. Toggle 'Header row' to control whether the first row of your CSV is treated as column names or as data. Changing either setting re-parses the table automatically.

Click 'URL Import' to enter a remote CSV file address. The tool fetches the file directly from your browser to the target server — no data passes through any intermediary. The fetched content appears in the input textarea, ready for parsing.

Drag a CSV, TSV, or text file directly onto the input textarea to load its contents. A visual overlay appears while dragging to confirm the drop zone. You can also use the 'Upload' button to browse for files.

Hold Shift and click to select a range of cells. If the selected cells contain numbers, the statistics bar displays the sum and count of numeric cells in the selection. This is useful for quick calculations without exporting to a spreadsheet.