Best CSV Viewer Online

Open CSV and TSV files in your browser, edit data in a table, sort columns, and download the updated file. No uploads, no signup.

Free No uploads Editable table CSV & TSV

Drop your CSV file here or choose a CSV or TSV file from your device

CSV, TSV

CSV Viewer

customers.csv Download CSV

Editing Status Inline table updates

Table viewer and editor

Open and edit CSV data in a spreadsheet-like table

Use Open A Zip as a lightweight table editor for quick data review and cleanup.

Edit files in a tableUpdate cells directly in a spreadsheet-like editor without installing desktop software.

Sort columnsClick column headers to sort data while keeping rows easy to scan.

Resize rows and columnsAdjust row heights and column widths while reviewing wide or messy files.

Copy, paste and fill cellsUse familiar spreadsheet actions to copy data, paste values and fill nearby cells.

Download updated filesSave your edits by downloading the updated file back to your device.

Private local workflowYour file is opened locally in your browser. No uploads or account required.

Supported table files

CSV and TSV files

Open comma-separated and tab-separated data files directly in the browser. The viewer keeps the first row as column headers and displays the remaining rows as an editable table.

CSVComma-separated values for spreadsheets, exports and datasets.

TSVTab-separated values for clean table data and developer workflows.

How it works

Review a CSV table in three steps

1Choose a file

Drop a supported table file onto the page or select one from your device.

2Edit and sort the table

Review rows, edit cells, sort columns, resize the grid and clean up values.

3Download the updated file

Export the edited table when you are finished.

Private browser-based viewer

Your CSV data stays on your device

No uploadsYour file is processed locally in your browser. File contents are not uploaded to our servers.

No account requiredNo login, email or signup flow is required to open a file.

Local editingEdits happen in the browser table and can be saved by downloading the updated file.

Common data workflows

Built for quick CSV inspection and cleanup

Check exported reportsOpen marketing, analytics, finance or product exports before importing them into another tool.

Clean small datasetsFix names, statuses, IDs, labels and other table values without opening a full spreadsheet app.

Review TSV dataInspect tab-separated data from logs, scripts, database exports or developer tools.

FAQ

CSV viewer questions

Can I open files online for free?

Yes. You can open table files in your browser for free without installing spreadsheet software.

Can I edit files online?

Yes. You can edit cells in the table and download the updated file when you are done.

Can I sort columns?

Yes. The table viewer supports column sorting so you can review rows in a more useful order.

Are my files uploaded?

No. Files are processed locally in your browser. File contents are not uploaded.

Does it support TSV files?

Yes. You can open TSV files as tab-separated tables and download the updated TSV file.

Can I filter or search rows?

Not yet. The current viewer supports editing, sorting, resizing, copy, paste and download. Filtering and search are good candidates for future updates.