CSV Viewer
Inspect, search, sort, filter, and lightly edit CSV data. This release uses a cancellable browser worker and a conservative 10 MiB input guard; phones and tablets receive an advisory above 5 MiB.
Drop your file here or browse from your device
Accepts CSV, TSV, TXT. Maximum input: 10 MiB. Files above this hard limit are rejected before local processing.
See the viewer before choosing a file
Samples use the same local worker and grid as your own CSV.
How to Use CSV Viewer
- Drag and drop your CSV file onto the upload area, or click to browse
- Your data will be displayed in a spreadsheet-style grid
- Click column headers to sort, use the search box to filter
- Download or copy your data when done
Features
- Drag-and-drop file upload
- Paste CSV data directly
- Load from URL
- Sortable columns
- Filterable columns
- Virtual scrolling with a conservative 10 MiB input guard
- Dark mode support
Use Cases
- Quickly preview CSV files before importing
- Review data exports from applications
- Check CSV formatting and structure
- Share CSV data without spreadsheet software
Frequently Asked Questions
How do I open a CSV file without Excel?
Just drag your CSV file onto this page or click to browse. It opens instantly in a spreadsheet-style grid in your browser — no Excel, Google Sheets, or software install required.
Is this CSV viewer free?
Yes. The CSV Viewer is free to use with no signup or watermark.
Is my data secure?
Yes. All processing happens in your browser — your files never leave your computer or get uploaded to a server.
Can it open large CSV files?
The grid renders only visible rows, but this release conservatively rejects inputs above 10 MiB and also applies row, column, cell, and cell-size guards. Phones and tablets show an advisory above 5 MiB because available memory and CSV structure still matter.
Can I edit and download the CSV?
Yes. Toggle Edit Mode to change cells, then download the modified file — the original is never altered.