Preview CSV files with intelligent auto-delimiter detection. Convert to JSON, sort columns, filter data, and export to multiple formats.
- Auto-detects delimiter (comma, tab, semicolon, pipe)
- Table view with sortable columns and basic filtering
- Convert CSV to JSON (array of objects or raw arrays)
- Export to CSV, JSON, or TXT
- Paste or paste from clipboard; no server upload
Inspect CSV exports, convert spreadsheets to JSON for APIs or scripts, or quickly check delimiter and encoding before importing elsewhere.
Try CSV Viewer & Converter at Spoold →
Spoold is a free developer toolbox that detects what you paste and opens the right tool.
- No sign-up – Use every tool without an account.
- Runs in your browser – Your data stays on your device; we don’t store or log your input.
- Paste and go – Paste JSON, HTML, JWT, curl, Base64, or any text on the homepage and Spoold suggests the right tool.
- One place for many tools – JSON formatter, JWT decoder, Base64, UUID generator, regex tester, curl-to-code, and more.