How do I combine multiple text files?

Upload your .txt or .md files, set the order, and click Merge. The combined file downloads instantly with separators between each input file.

Is markdown formatting preserved?

Yes. Markdown syntax is preserved exactly as-is — the output is a single .txt file you can rename to .md.

What encoding is used?

UTF-8 by default, which supports all major languages and emoji.

Are my files uploaded to a server?

No. Master Merge processes every file directly in your browser using JavaScript. Nothing is uploaded, stored, or transmitted to any server. This is the most private way to handle sensitive documents online.

Is this tool really free?

Yes — 100% free with no signup, no credit card, no email, no watermarks, and no hidden limits. We do not run ads or sell data. Use it as much as you want.

Merge Text Files

Combine multiple text and markdown files into a single file.

Drag & drop your files here

or click to browse

TXT / MD

Max 100MB per file · Up to 20 files

Supported Formats

TXTMD

Merge text files and markdown documents online for free. Master Merge combines your .txt and .md files into a single document with clear separators between each file's content. Fast, free, and completely private.

How it works

Upload

Drag & drop or browse your files

Process

Files are processed in your browser

Download

Get your merged/converted file instantly

About Merge Text Files

Master Merge combines plain text (.txt) and markdown (.md) files into a single document — with clean separators between each input file so it's easy to see where one file ends and the next begins.

The tool runs entirely in your browser, making it ideal for combining sensitive logs, code snippets, notes, or research excerpts. Encoding is preserved (UTF-8 by default), and line endings are normalized.

Drag your text files in, reorder if needed, and download the merged file instantly. There are no size limits, no signup, and nothing is sent to a server.

Why use Master Merge for merge text files

Combines .txt and .md files in one click
Clean separators between each file
UTF-8 encoding preserved
No size limits
100% private browser-based merging

Common use cases

Consolidate notes from multiple sources
Combine code snippets for review
Merge log files for analysis
Bundle markdown documentation pages