This tool reads the content of selected .txt and .csv files in your browser and composes a single text file. Processing is done client-side so your files are never uploaded to a server.
Supports drag & drop and multi-file selection. Choose a separator between files (newline, comma, or a custom line). For best results ensure files are encoded in UTF-8.
The merged output is convenient for data processing, backups or preparing lists for import into other systems without extra tooling.
How do I merge several CSV files into one without Excel?
Drag the CSV files into the upload area, choose the "New line" separator, and click "Merge & Download" — the browser builds a single file without opening Excel or any third-party software.
Can I change the file order before merging?
Files are merged in the order they were added. To change the order, click "Reset" and re-add files in the sequence you want.
What if the files use different encodings?
The tool expects UTF-8. If a file is saved in CP1251 or another encoding, merging may produce garbled characters — re-save the file as UTF-8 before uploading.
Ways to merge text files
| Method | Install required | Best for |
|---|---|---|
| Online tool (this service) | None | Quick merging of a few files in the browser |
| copy/cat command in a terminal | None, but requires command-line skills | Users comfortable with the console |
| Excel/Google Sheets | Excel or a Google account | Merging with additional data processing |
| Manual text editor | None | One or two small files |