CSV 对比工具
在线对比 CSV 文件，即刻高亮显示每一处新增、删除或修改的行。
What Is CSV Diff?
CSV Diff is a free online tool that compares two CSV files and highlights every addition, deletion, and modification. It supports three view modes: Split view for side-by-side line comparison, Unified view for a compact single-panel diff, and Table View for a structured cell-level comparison. Whether you are reconciling exported spreadsheets, auditing data pipeline outputs, or comparing configuration tables, CSV Diff makes it instant.
How to Use CSV Diff
- Paste your original CSV into the left panel.
- Paste the modified CSV into the right panel.
- Click Compare to see the highlighted differences.
- Switch to Table View for a structured cell-by-cell comparison.
Features
- Line-by-line CSV comparison with added/removed highlighting
- Split and Unified diff views
- Table View with cell-level change highlighting
- Column header diff — detects added or removed columns
- Copy diff result to clipboard
- Load sample CSV to try instantly
FAQ
Can CSV Diff handle large files?
Yes — all CSV diff processing happens entirely in your browser with no server-side file size limits.
Is my CSV data sent to a server?
No. DiffCheck runs fully client-side. Your CSV data never leaves your browser.
What is the Table View mode?
Table View parses both CSV files and displays them as formatted tables with cell-level highlighting, making it easy to spot which cells changed, were added, or were removed.
Does CSV Diff support quoted fields or commas inside cells?
The tool provides line-by-line and table-based comparison for standard comma-separated values. For complex CSV with quoted commas, use the Split or Unified diff view.