Merge multiple text files quickly — right in your browser
The ultimate free online text file merger. Easily combine multiple text files (.txt), log files, and CSVs into a single document. Our text merger tool runs securely in your browser, ensuring fast and safe processing without uploading your data to a server. Handles large text files with ease.
Upload Files
Drag and drop or select the files you want to merge.
Supports .txt, .csv, .log, .tsv, and other plain text formats.
Maximum total file size is 2GB.
Remove Headers (for CSV files)
If your CSV files have header rows, enable "Remove headers after the second file" to keep only the first file's header.
This prevents duplicate headers from appearing in the merged output.
Download
Confirm the file order, then click the Merge button.
The merged file is generated instantly on your device and downloaded right away.
Free and no registration required
Supports any plain text format — CSV, TXT, LOG, TSV, and more
Maximum total file size: 2GB
All processing runs locally in your browser — files are never sent to a server
Binary formats like PDF, Word, or Excel are not supported
Data analysts combining CSV exports
Developers merging log or config files
Writers putting together Markdown or plain text documents
Anyone who needs to merge .txt, .log, .tsv, or similar files without extra software
Can I merge text files online for free?
Does this support formats other than CSV and TXT?
Can I merge CSV files without duplicating the header row?
Are my files uploaded to a server?
Do I need to install anything?
What formats are not supported?
Because everything runs in your browser, there's no upload time — files are merged at near-instant speed even when working with large datasets. No command line, no software to install, and no file size anxiety. Just open the page and start merging.
Give it a try right now.