Merge Text Files Into One — Free

Stack .txt logs, exports, or notes end-to-end in the order you choose. Runs on your computer — nothing is uploaded.

Free · No signup · No upload · From the makers of Bulk File Merger, trusted since 2004

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Connected — privacy mode available

You don't need the internet. Disconnect and watch the tool work.

Online

🔒 Verify the privacy claim yourself

The simplest way to confirm your files never leave this device:

Disconnect from the internet.

Turn off your Wi-Fi → merging keeps working. The banner up top turns green.

or drop Excel, CSV, or text files here

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0 files loaded into your browser. Nothing has been uploaded.
Excel cell values are preserved. Charts, macros, conditional formatting, and merged cells are not.

What you can do

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Concatenate text files

Stack .txt log files, exports, or notes end-to-end. Preserves your line breaks; no reformatting.

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Drop a whole folder

Drag a folder in and every text file inside is picked up — no selecting files one by one.

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Remove duplicate lines

One checkbox dedupes the merged output — handy for combined logs and exported lists.

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No upload wait

Runs locally on your computer. No queue, no upload bar, no row caps. Often faster than the online tools.

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Private by design

Your files stay on your device from start to finish. Turn off your Wi-Fi and the merge still works.

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Nothing to install

Works in the browser you already have — on desktop, laptop, or phone. No account, no download.

How we compare

This tool Online text joiners Excel Power Query Manual copy-paste
Files stay on your computer✓ You can verifyUploads✓✓
Handles Excel + CSV + text✓Usually one type✓✓
Drag to reorder before merge✓RareNo—
Setup requiredNoneNoneHoursNone, but slow
Works offline✓No✓✓

Turn off your Wi-Fi. It still works.

That's how you know nothing ever leaves your computer.

Online mergers and "free file combiners" upload your data to a server. We don't. There's no test you can run on us that we'd fail.

Try it yourself ↑

Common questions

Does it change my formatting or line endings?

No. Files are joined end-to-end exactly as they are; a line break is added between files only when one is missing.

Is there a size limit?

No fixed limit — big log files merge fine. The bound is your device's memory; for routine multi-gigabyte batches the desktop app is built for that.

Do my files get uploaded?

No. The merge runs on your own computer — turn off your Wi-Fi and it still works.

Can I turn text files into a spreadsheet?

Yes — choose Excel or CSV as the output format and each line becomes a row.

Merging thousands of files at a time?

This page is built for everyday merges. For multi-gigabyte batches and folder-scale jobs on a schedule of their own, the Bulk File Merger desktop app for Windows and Mac picks up where the browser leaves off.

See the desktop app →
Also free: Merge Excel files online · Combine CSV files online  ·  Enjoying it? Leave a tip ☕

Works on every device you use

iOS, Android, macOS, Windows, or any modern browser — same tool, same code, same privacy.

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