How can it work offline?

All conversion logic is JavaScript that has already been loaded; no step needs a server round-trip.

Use the Verify Security panel to run a 1,000-row self-check and count network requests, which should be zero.

Is anything cached from my file?

No. Only the site's own static assets are cached for offline use; your data is not stored.

Does offline mode support Excel too?

Yes. The Excel library is preloaded when the page opens, so Excel conversion works offline as well.

CSV to SQL converter (works offline)

Load this page, then turn off your Wi-Fi. The conversion still works, because parsing and SQL generation run in your browser rather than a server. It is an easy way to prove the tool cannot be capturing your data.

Default types are inferred per column, quotes are escaped, and you can export the result as a .sql file even while offline.

SQL INSERT

Drop a file to generate INSERT statements

Processing stays in this browser. Guests can process up to 500 rows per file.

How to use this tool

1Open this page while you still have a connection.
2Watch the security banner change to Offline Ready.
3Disconnect your network.
4Drop a CSV and generate the SQL.

Frequently asked questions

How can it work offline?: All conversion logic is JavaScript that has already been loaded; no step needs a server round-trip.
How do I verify it?: Use the Verify Security panel to run a 1,000-row self-check and count network requests, which should be zero.
Is anything cached from my file?: No. Only the site's own static assets are cached for offline use; your data is not stored.
Does offline mode support Excel too?: Yes. The Excel library is preloaded when the page opens, so Excel conversion works offline as well.

Private by design

This tool runs entirely in your browser. Files, tables, and results are never uploaded to a server — you can even disconnect your network and keep working. See the Privacy Policy.