LocalCSV Viewer

Ctrl+O

Free Online CSV & TSV Viewer

LocalCSV Viewer is a free, privacy-first CSV and TSV file viewer that runs entirely in your browser. No upload required — your files are processed locally and never sent to any server. Supports CSV, TSV, and TXT formats with automatic delimiter detection. Features include full-text search, column filtering, multi-column sorting, and column visibility control. Works with large files directly in your browser without any installation.