Free Online CSV Viewer
The fastest way to peek into your data. 100% private, browser-based, and optimized for large datasets.
Drag & drop a CSV file here, or click to select
Need More Power?
Our CSV Viewer is part of a complete data suite designed to help you manage spreadsheets without the bulk of Excel.
Why use our Online CSV Viewer?
Does this work offline?
Once the page is loaded, our CSV viewer works entirely in your browser. Since we don't use a server to parse your data, you can view your files securely even with a slow connection.
Is there a file size limit?
Our viewer is optimized to handle millions of rows. However, because it runs in your browser, the limit depends on your computer's RAM. Most users can easily view files up to 200MB.
How do I edit or convert my data?
If you need to make changes, navigate to our CSV Editor. To change formats, use our CSV Converter to export your data as JSON or Excel.
Is it safe for sensitive data?
100% Safe. Your data never leaves your device. We use local JavaScript execution, meaning your data is never sent to a server, never stored in a database, and never seen by anyone.