Tools / Plainrow / append csv files
Append CSV files in the browser
Append two CSV files in your browser. The files never leave your machine.
Open both files, stack the rows, download one. No account. No telemetry. Offline once the page is loaded.
Example
| date | hours |
|---|---|
| 2026-03-02 | 4 |
| 2026-03-03 | 6 |
| date | hours |
|---|---|
| 2026-03-09 | 5 |
| date | hours |
|---|---|
| 2026-03-02 | 4 |
| 2026-03-03 | 6 |
| 2026-03-09 | 5 |
Both files stay on this computer. Lite does two files, stack, export.
Same job under another name: merge CSV without uploading. Support.