Local · Private · Free

CSV Viewer & Editor

Open a CSV, then sort, search and edit it like a spreadsheet, entirely on your device. Export clean CSV or JSON when you’re done.

Drop a .csv file here
or click to browse, also .tsv / .txt

Files never leave your browser

Paste CSV

A spreadsheet that never phones home

Most online CSV editors upload your file to a server. This one parses and edits everything in your browser, quoted fields, commas and line-breaks inside quotes, and tab or semicolon delimiters are all detected automatically. Edit inline, sort by any column, filter rows, then export tidy CSV or JSON.

About CSV Viewer & Editor

CSV Viewer & Editor is a free, private tool that runs entirely in your web browser. Drop or paste a CSV file to view it as a sortable, filterable, editable table, then export to CSV or JSON. Because everything happens locally on your device, your files and data are never uploaded to a server. There is no sign-up or installation required, and it keeps working offline. Like every free online tool by Digital Heroes, CSV Viewer & Editor is 100% free with no limits.

What you can do

View any CSV as a table instantly, with automatic delimiter detection for comma, tab, semicolon, and pipe files.

Sort by any column with one click, cycling through ascending, descending, and unsorted.

Search and filter rows in real time across all columns at once.

Edit cells inline and rename, add, or delete columns and rows without leaving your browser.

Export to CSV or JSON, or copy the CSV directly to your clipboard.

Handle quoted fields correctly, including commas and line breaks inside quoted values.

How to use CSV Viewer & Editor

Open CSV Viewer & Editor in your browser. No signup needed.

Drop a CSV file onto the upload area, click to browse, or paste raw CSV text.

Use the search bar to filter rows, click any column header to sort, and click any cell to edit it.

Click Download CSV or Download JSON to save your result. Your data stays on your device.

Frequently asked questions

Is CSV Viewer & Editor free?

Yes, CSV Viewer & Editor is completely free for everyone. No sign-up, no account and no usage limits.

Is it private? Are my files uploaded anywhere?

No. CSV Viewer & Editor runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. This tool is a Progressive Web App, once the page has loaded it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does CSV Viewer & Editor do?

Open a CSV as a sortable, filterable, editable table, export to CSV/JSON.