Rowser

Instant CSV & TSV Viewer

Rowser

Open CSV and TSV documents in Chrome and Firefox as searchable, sortable tables without uploading files anywhere.

Get it on Chrome Web Store Download for Firefox View screenshot

Rowser catches eligible top-level CSV and TSV navigations, opens them in its own viewer, and keeps the raw source one click away.

Built for browser-first data inspection

Fast table viewing without a spreadsheet detour.

Table mode

Search globally, sort a column, and move through SQL-backed pages.

Raw mode

Switch back to the original text without refetching the document.

Local files

Open files from the viewer or drop them into the page for quick checks.

Large files

See clear decisions for oversized sources before the browser gets buried.

Screenshot

A focused viewer for row-heavy files.

Rowser displaying a customers CSV file as a dark searchable table

Privacy

Local-only by design.

Rowser processes CSV and TSV data in your browser. It has no accounts, telemetry, cloud sync, or Rowser-controlled backend.