# TXT File Merger

Merge multiple text files with various strategies (concatenate, interleave, etc.)

> Canonical page: https://elysiatools.com/en/tools/txt-merger

- **Category:** Data Processing

- **Keywords:** txt, merge, combine, text, files, concatenate

## Overview

The TXT File Merger is a versatile utility designed to combine multiple text-based files into a single document using various strategic layouts. Whether you need to concatenate logs, interleave data lines, or add custom separators, this tool streamlines your text management workflow without requiring complex software.

## Inputs

- **Text Files** (file): Select text files to merge...
- **Merge Strategy** (select)
- **Separator** (select)
- **Include File Headers** (select)
- **Add Line Numbers** (select)
- **File Encoding** (select)

## When to use

- Consolidating multiple log files into a single chronological report.
- Merging fragmented data exports into one unified dataset for analysis.
- Combining several code snippets or documentation files into a master document.

## How it works

- Upload your text files (TXT, MD, CSV, etc.) using the file selector.
- Select your preferred merge strategy, such as concatenation or interleaving.
- Configure optional settings like custom separators, file headers, or line numbering.
- Process the files and download your newly combined text document.

## Use cases

- Aggregating daily server logs into a single weekly analysis file.
- Merging multiple Markdown documentation files into one comprehensive manual.
- Combining fragmented CSV data exports into a single master file for spreadsheet import.

## Frequently asked questions

### What file types are supported?

The tool supports plain text formats including .txt, .md, .log, .csv, .html, .css, .js, and .json.

### Can I add a separator between files?

Yes, you can choose between a single newline, double newline, or define a custom separator string.

### Is there a limit to the number of files I can merge?

You can upload up to 5 files at a time for a single merge operation.

### Does the tool preserve file encoding?

Yes, you can specify the output encoding, including UTF-8, ASCII, Latin-1, or UTF-16 LE.

### Can I identify which content came from which file?

Yes, by enabling the 'Include File Headers' option, the tool will prepend the original filename to each section.

## Related tools

- [Messy Text to Structured Data Workbench](https://elysiatools.com/en/tools/messy-text-to-structured-data-workbench): Infer tables from pasted text, mixed delimiters, key-value lines, or HTML and export CSV, JSON, and Markdown.
- [PDF Table Extractor to CSV/JSON](https://elysiatools.com/en/tools/pdf-table-extractor-to-csv-json): Extract tables from PDFs with OpenDataLoader and export them as structured JSON, flat CSV, or HTML tables
- [Text Encoding Forensics and Repair](https://elysiatools.com/en/tools/text-encoding-forensics-and-repair): Inspect text encoding, BOM, newline style and mojibake symptoms, then produce a scored local repair candidate.
- [AI Token Estimator](https://elysiatools.com/en/tools/ai-token-estimator): Analyze language mix and estimate token usage across OpenAI, Codex, Claude, and DeepSeek profiles
- [JSON File Merger](https://elysiatools.com/en/tools/json-merger): Merge multiple JSON files with various merging strategies (deep merge, overwrite, combine arrays, etc.)
- [Text File to PDF Converter - 文本文件转PDF转换器](https://elysiatools.com/en/tools/text-file-to-pdf-converter): Convert text files (.txt, .md, .csv, etc.) to PDF documents with customizable formatting and encoding support
- [Data URI Generator](https://elysiatools.com/en/tools/data-uri-generator): Convert files into Data URIs (Base64 or percent-encoded) for inlining images, fonts, and assets directly into HTML, CSS, or Markdown
- [Dataset Imbalance Detector & Resampler](https://elysiatools.com/en/tools/dataset-imbalance-detector-resampler): Detect class imbalance in CSV or JSON datasets, compare resampling strategies, and preview a balanced output dataset

## Samples

- [PDF Samples](https://elysiatools.com/en/samples/pdf-samples): Generated PDF samples from tools dated 2026-02-01 to 2026-02-10
- [CSV Samples](https://elysiatools.com/en/samples/csv-samples): Sample CSV files with various data types, sizes, and complexity levels
- [Python Samples](https://elysiatools.com/en/samples/python): Essential Python code examples and Hello World demonstrations
- [7Z Viewer Samples](https://elysiatools.com/en/samples/7z-viewer-samples): A small 7Z archive with text and JSON files for in-browser preview