Developer Tool
CSV Viewer
A high-performance technical editor for inspecting, sanitizing, and transforming CSV datasets with editorial precision.
Data Source
upload_fileProcessing Options
Data Preview
0 ROWSFrequently Asked Questions
What is a CSV file used for?
CSV (Comma-Separated Values) files are used to store tabular data in plain text format. It is a widely supported format for transferring data between different applications, such as moving contacts from an email client to a spreadsheet program or databases.
How do I open a CSV file?
CSV files can be opened using our online CSV Viewer, or with spreadsheet programs like Microsoft Excel, Google Sheets, and Apple Numbers. They can also be opened with any standard text editor like Notepad since they are just plain text.
Is my CSV data safe?
Yes! Our CSV Viewer processes all your data locally within your browser. Your files and data are never uploaded, stored, or sent to any external servers, ensuring complete privacy and security.
Why is my CSV not displaying correctly?
This usually happens if the file uses a different delimiter (like a semicolon, tab, or pipe) instead of a comma. Try changing the "Delimiter" processing option in our tool to "Auto-detect" or explicitly selecting the correct delimiter.
Can I view large CSV files?
Our tool is optimized for performance and can handle standard CSV files instantly. Because processing happens locally in your browser, extremely large files (e.g., hundreds of megabytes) may be limited by your computer's available memory.
What does "Has Header Row" mean?
Checking "Has Header Row" tells the viewer that the first line of your CSV file contains the names of the columns (like "Name", "Email", "Phone"), rather than actual data. This makes the table preview much easier to read and understand.