Free, browser-based utilities for everyday developer workflows

CSV Viewer / Cleaner

Paste CSV to preview as a table. Auto-detect delimiter, trim cells, remove empty rows/columns, and export cleaned CSV. Runs locally in your browser.

  • Paste CSV to view as a table (auto-detect delimiter).
  • Clean and trim rows, remove empty lines, and export.
  • Ideal for quick CSV preview and QA checks.

CSV input

Shortcuts: Ctrl + Enter Preview, Esc Clear status
Sample:
Delimiter:
Export delimiter:

Table preview

Note: Preview is limited for performance (shows first 200 rows, first 50 columns). Export/cleaning still uses the full data.

How to use CSV Viewer / Cleaner

Upload or paste a CSV file into the tool. It automatically detects the delimiter and renders the data as a clean table. You can remove empty rows, trim whitespace, filter columns, and download the cleaned CSV.

Common use cases

Data analysts use this to quickly inspect exported spreadsheets or database dumps without opening Excel. QA engineers use it to validate test data exports, and backend developers use it to clean up CSV payloads before importing them into databases.

Why run this in your browser?

All processing happens locally in your browser. Your data never leaves your machine, making it safe for sensitive payloads, internal API responses, and confidential configurations.