Is my spreadsheet uploaded?

No. The file is read locally with the File API and parsed in your browser.

Which delimiters are supported?

Comma, semicolon, tab and pipe — pick the one matching your file from the delimiter selector.

Does it handle quoted values with commas?

Yes, the parser follows RFC 4180 rules including escaped double quotes and newlines inside quoted fields.

Can I export to JSON?

Yes. With a header row, each row becomes an object keyed by the column names.

How big a file can I open?

It depends on your device memory; files up to a few megabytes work smoothly.

CSV Viewer & Editor

Open a CSV as a sortable, searchable table and edit cells before exporting.

Support

Works Offline

Privacy First

No Login

No API

File API

Delimiter

Search rows

Table

Click a cell to edit it, click a header to sort.

Drop a file here

Drop a CSV or TSV file

Rows

Columns

Cells

Raw CSV

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About the CSV Viewer & Editor

Drop in a CSV or TSV file and view it as a real table: sort by any column, search across every cell, edit values inline and export the result back to CSV or JSON. Large quoted fields and embedded newlines are handled correctly.

Examples

Sort a column

id,name,salary … click 'salary'

Output

Rows reordered numerically, highest last

Export as JSON

JSON3 rows with a header row

Output

JSON[{"id":"1","name":"Ada Lovelace"} … ]

Keyboard shortcuts

Copy the main outputCtrl / ⌘ + Shift + C
Download the resultCtrl / ⌘ + S
Share this toolCtrl / ⌘ + Shift + S
Reset the inputsAlt + R
Open the tool search paletteCtrl / ⌘ + K

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Frequently asked questions

Comments

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Version 1.0.0 · Updated 2026-08-13 · Runs entirely in your browser