Merge multiple Markdown files into a single document with custom separators
Drag & drop Markdown files
or click to browse (.md, .markdown, .txt)
Upload files to see combined output
Upload multiple Markdown files at once
Drag files to change order or use arrow buttons
See the rendered output before downloading
The Combine Markdown tool allows you to merge multiple Markdown files into a single document. It supports drag-and-drop upload, customizable separators between files, optional filename headers, file reordering, live preview, and instant download. It's perfect for consolidating documentation, notes, blog posts, or any Markdown content into one unified file.
To combine Markdown files: 1) Upload multiple files by dragging them to the dropzone or clicking to browse. 2) Reorder files by dragging them or using the arrow buttons. 3) Choose your separator style (horizontal rule, line breaks, or none). 4) Toggle filename headers on/off as needed. 5) Preview the combined output or view raw Markdown. 6) Download the combined file or copy to clipboard. All processing happens in your browser for privacy.
The tool accepts .md (Markdown), .markdown, and .txt (plain text) files. You can upload multiple files at once using drag-and-drop or the file browser. Each file is read as text and can be reordered before combining. There's no file size limit as all processing is done locally in your browser.
You can choose from several separator options: Horizontal Rule with --- or ***, Double Line Break, Single Line Break, Triple Line Break, or No Separator. The separator is inserted between each file in the combined output. You can also enable filename headers which adds the filename as a heading (# Filename) at the start of each file's content.
Yes! After combining your files, you can download the result as a .md file named 'combined.md' by clicking the Download button. You can also copy the entire combined content to your clipboard with one click, making it easy to paste into other applications or editors. The statistics panel shows the combined file size before downloading.
You can reorder files in three ways: 1) Drag any file up or down in the list using the grip icon. 2) Use the up/down arrow buttons next to each file for precise positioning. 3) Visual feedback shows where files will be dropped during drag operations. The combined output updates automatically when you reorder files, and the file order is reflected in both preview and raw Markdown views.
Common use cases include: consolidating multi-file documentation into a single README, merging chapter files for ebooks or guides, combining meeting notes or daily logs, creating comprehensive reports from multiple sections, aggregating blog posts into collections, preparing documentation for PDF conversion, combining API documentation files, and merging changelog or release notes. The tool is useful whenever you need to create a unified document from multiple Markdown sources.
Yes, your data is completely secure. All file processing happens entirely in your browser using client-side JavaScript. Your files are never uploaded to any server or transmitted over the internet. The tool reads files using the FileReader API, processes them locally, and generates the combined output in memory. This ensures complete privacy and also enables faster processing without network delays.