데이터를 업로드하지 않는 CSV 뷰어

I just wanted to open a CSV file quickly.

Instead, I got:

• Slow spreadsheet apps
• Online tools that upload my data
• Way too much friction

So I defined a simple goal:

• Fast and frictionless
• Fully local (no uploads)
• Spreadsheet-like experience

That’s what I built.

What you can do with it

• Open CSV files instantly (drag & drop, no setup)
• Search and filter large datasets in seconds
• Edit data like a spreadsheet
• Export exactly what you see

Why this matters

Everything happens locally in your browser:

• Your data never leaves your device
• No account required
• No tracking, no storage

Built with client-side JavaScript — no backend involved.

Just open, edit, and export.

How it works

Built with client-side JavaScript — no backend involved.

Spreadsheet-Like Editing

Click a cell to select it, then press Enter or double-click to start editing.

Press Enter again to save the value and move to the cell below. Use Option + Enter on macOS or Alt + Enter on Windows to insert a line break.

You can also drag the small fill handle to copy a value across multiple cells.

Export the Current View

The exported CSV reflects the current table state, including:

• Search results
• Sorting order
• Visible columns
• Saved cell edits

Try it yourself

Open a CSV file, edit a few cells, and export it —

all without uploading anything.

👉 https://csv-open.github.io/

No signup. No upload. Just works.

Handles CSV files up to 25MB

Supports multiple languages