A CSV (Comma-Separated Values) file is a simple text file used to store tabular data, such as a spreadsheet or database. Each line is a data record, and commas separate the individual values in that line.

Online CSV Viewer - View, Search, and Sort Large CSV Files

Q: Are my files and data safe with this tool?

Yes, your data is 100% safe and private. Our tool processes your CSV file directly in your web browser. No data is ever uploaded to our servers.

Q: How large of a file can this CSV viewer handle?

The tool is optimized to handle very large CSV files that might cause other programs to lag or crash. The performance depends on your computer's available memory, but it's designed to be highly efficient.

Q: Can I sort and filter the data?

Yes. You can instantly filter all rows using the search box. You can also sort the data by clicking on any column header to toggle between ascending and descending order.

Q: What is a delimiter and can I change it?

A delimiter is the character that separates values in the file. While a comma is standard, some files use semicolons or tabs. You can specify the delimiter in the tool's options to ensure your file is parsed correctly.

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Online CSV Viewer

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Upload CSV File

Browse for a .csv file or drag & drop it here.

Delimiter

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First row is header

Upload or drop a CSV file to get started.

About the Online CSV Viewer

Our Online CSV Viewer is a powerful tool we built to help you open, view, and analyze comma-separated value (CSV) files right in your web browser. You can quickly open large datasets without needing to install any software like Microsoft Excel or Google Sheets. We made this tool because we know how frustrating it can be to work with big data files, so we focused on speed, privacy, and useful features.

This tool is perfect for developers, data analysts, or anyone who needs to quickly check the contents of a CSV file. It includes powerful features like instant search, column sorting, and pagination, which make navigating your data easy. Because everything runs on your computer, your files are never uploaded to our servers. This means your data remains completely private and secure, and the tool works incredibly fast.

Key Features

Client-Side Processing: Your files are processed directly in your browser. Nothing is ever uploaded, so your data is 100% private and secure.
Handles Large Files: Our viewer is built to handle very large CSV files that might crash other spreadsheet programs.
Instant Search: Quickly filter through thousands of rows by typing in the search box. The table updates in real-time.
Column Sorting: Just click on any column header to sort the data alphabetically or numerically. Click again to reverse the order.
Smart Delimiter Detection: While it defaults to a comma, you can specify any delimiter, like a tab or semicolon, to parse your file correctly.
Pagination: We automatically break your data into easy-to-manage pages so you can navigate large files without endless scrolling.

Frequently Asked Questions (FAQ)

What is a CSV file?

A CSV (Comma-Separated Values) file is a simple text file where data is stored in a table-like format. Each line in the file represents a data record, and each record consists of one or more fields, separated by commas. It's a very common format for exchanging data between different applications.

Are my files and data safe with this tool?

Yes, absolutely. Your data is completely safe because it never leaves your computer. All the file reading, parsing, and displaying happens locally in your web browser using JavaScript. We do not upload your files to our server, so your privacy is fully protected.

How large of a file can this CSV viewer handle?

Our tool is designed to handle very large CSV files, often much larger than what typical spreadsheet software can manage without slowing down or crashing. Since it processes the file on your computer, the main limitation is your computer's own memory and processing power.

Can I sort and filter the data?

Yes. You can instantly filter the entire dataset using the search box above the table. To sort, simply click on any column header. The first click sorts it in ascending order (A-Z, 0-9), and the second click sorts it in descending order (Z-A, 9-0).

What is a delimiter and can I change it?

A delimiter is the character used to separate the values in your CSV file. The most common one is a comma (,), but some files use tabs ('\t'), semicolons (;), or other characters. Our tool defaults to a comma, but you can easily change it in the options panel if your file uses something different.