Merge TXT & code files
Combine plain text files alongside developer formats like .dart, .kts, .xml, .yaml and .yml into a single labeled TXT output.
Text File Combiner Online Free
Merge multiple TXT, Dart, KTS, XML and YAML files into one downloadable TXT file. Drag & drop or select files, and everything is processed directly in your browser — no uploads required.
Quick answer: This free text file combiner works online and runs entirely client-side. Once the page is loaded, your files are read and merged in the browser without sending them to any server.
Free Online File Utility
Combine Text & Code Files
Drag & Drop Your Files Here
or choose multiple supported text files from your device
Choose FilesNo files selected yet.
Your selected files are read as text in your browser. The output is downloaded as a single .txt file.
.txt
.dart
.kts
.xml
.yaml
.yml
text/* MIME
Free Text File Combiner Online
Merge many text and code files into a single TXT document instead of copying and pasting them one by one.
Free online and browser-based
This is a free text file combiner online. Files are read locally in the browser with the FileReader API — no server-side upload step is required for this tool.
Duplicate-safe selection
Select files multiple times without creating duplicates. Files with the same name are skipped automatically so your combined output stays clean.
Filename headings in output
Every source file is written under its own separator heading (===== FILE: name =====) so you can easily identify sections in the merged TXT.
How to Use the Text File Combiner
A simple workflow for merging multiple text files at once.
1. Select files
Drag and drop your text or code files into the tool, or choose multiple files from your device.
2. Review the list
Check the selected filenames and sizes. Duplicate names are skipped automatically.
3. Combine
Click Combine Files into One TXT to merge everything in the browser.
4. Download
Your browser downloads the merged result as combined_files_TIMESTAMP.txt.
Text File Combiner FAQ
Direct answers to common questions about merging text and code files.
What is a Text File Combiner?
It merges multiple text or code files into one downloadable TXT document, with each original filename shown as a heading.
Does it work without installing software?
Yes. The tool runs in a modern browser and does not require any desktop installation.
Is it free?
Yes. It is provided as a free online utility with no paid processing step.
Which file types are supported?
Explicitly: .txt, .dart, .kts, .xml, .yaml, .yml, and any file whose browser MIME type is text/*.
Where is the merged file created?
The browser generates a TXT Blob locally and triggers a download named combined_files_*.txt.
Are my files uploaded to a server?
No. File reading and merging are performed client-side by the browser; this tool does not send your file contents to a remote server.