Drag & Drop Text files here
or click to select files (.txt, .csv, .md, etc.)
An Online Text File Merger is a convenient web-based utility that allows you to combine the content of multiple text-based files (such as .txt, .csv, .md, .log, .json, .xml, .html, .css, .js, etc.) into a single, consolidated text file. This is incredibly useful for merging log files, combining code snippets, consolidating notes, joining chapters of a text document, or assembling data from various plain text sources.
Zenfied's Text File Merger is designed with simplicity, speed, and your privacy in mind. The entire merging operation occurs directly within your web browser (client-side). This critical feature means your text files are never uploaded to our servers, ensuring your data remains completely private and the process is fast, as it leverages your own computer's resources.
- Add Your Text Files: Drag and drop your text files (e.g., .txt, .csv, .md) onto the designated upload area, or click the area to browse and select multiple files from your computer.
- Arrange Files: After uploading, you'll see a representation of your files. You can reorder them by dragging and dropping them into your desired sequence. The content of the files will be merged in this order.
- Merge & Preview: Once your files are in order, click the "Merge Text Files!" button. The tool will read the content of the files and display a preview of the merged text in a textarea.
- Adjust Separator (Optional): In the preview section, you can specify a "Separator between files." By default, this is two newlines (`\n\n`). You can change this (e.g., to a single newline `\n`, a comma, or any custom string). Use `\n` for newline and `\t` for tab. Click "Update Preview" to see changes.
- Proceed to Download: If you're satisfied with the preview and separator, click the "Proceed to Download" button.
- Download Merged Text File: On the final screen, you can review the merged text again and see details like total lines and characters. Click the "Download Merged Text" button to save the combined text as a `.txt` file (e.g., `zenfied-merged-text.txt`) to your device.
- Clear or Start Over: Use the "Clear All" button to remove all uploaded files and reset the tool. If you're on the preview or download screen, use "Change Files" to go back and modify your selection, or "Merge Another Set" to begin a new merge operation.
- Secure & Private: All text file processing happens client-side. Your files and their content are never uploaded to any server.
- Client-Side Operation: Utilizes JavaScript's FileReader API and your device's resources for fast text reading and concatenation.
- Easy Drag & Drop Interface: Intuitive way to add and arrange your text files.
- Supports Various Text-Based Files: Works with .txt, .csv, .md, .log, .json, .xml, .html, .css, .js, and other plain text formats.
- Reorder Files: Easily define the sequence in which file contents are merged.
- Live Text Preview: See the merged text content in a textarea before downloading.
- Customizable Separator: Define custom text (including newlines `\n` and tabs `\t`) to insert between the content of each merged file.
- Completely Free: Merge your text files without any costs, subscriptions, or limitations.
- No Installation Needed: Works directly in modern web browsers.
- Direct TXT Download: Get your merged text content as a single `.txt` file (UTF-8 encoded).
- File Statistics: View total lines, characters, and file size of the merged output.
Our Text File Merger operates entirely within your web browser using JavaScript, ensuring your data never leaves your computer. The process is efficient and secure.
Here’s a simplified technical overview:
- File Selection: When you add text files, they are handled by the browser as `File` objects.
- Content Reading (Client-Side): For each selected file, the JavaScript `FileReader` API is used to read its content as plain text. The `readAsText()` method is typically employed. This happens asynchronously.
- Storing Content: The text content read from each file is stored in memory (associated with each file entry in our `fileData` array).
- Concatenation with Separator: When you initiate the merge or update the preview, the script iterates through your ordered `fileData` array. It takes the text content of each file and appends it to a growing string. Between each file's content, the custom "Separator" you've defined (e.g., `\n\n`) is inserted.
- Displaying Preview: The resulting concatenated string is then displayed in the `textarea` element for your review.
- Creating Downloadable File: For download, this final merged string is used to create a `Blob` object with a `text/plain;charset=utf-8` MIME type. A temporary object URL is generated for this `Blob`.
- Triggering Download: This object URL is assigned to an invisible `` (anchor) tag, and a click is programmatically triggered on this tag, prompting your browser to download the merged content as a `.txt` file.
Because all these steps reading file contents, string concatenation, and Blob creation are performed by JavaScript running in your browser, your original files and the merged text remain confidential and are processed quickly on your device.
- Consolidate Notes & Drafts: Combine various text notes, ideas, or draft sections into a single document.
- Merge Log Files: Join multiple application or server log files for easier analysis and troubleshooting.
- Combine Code Snippets: Assemble various code fragments or modules into one file for review or use.
- Aggregate Data Files: Merge data from multiple CSV or plain text data files (ensure consistent structure for CSVs).
- Assemble Text-Based Books/Manuals: Combine chapters or sections of a manuscript or technical document.
- Create Master Lists: Merge several smaller lists (e.g., to-do lists, contact lists) into a comprehensive one.
- Simplify Sharing of Textual Information: Send one combined text file instead of many individual ones.
- Easier Text Searching: Search for information across multiple original sources by first merging them into one document.
Your Text Content Stays Yours
Purely Client-Side Operations
All text file reading and merging operations are performed directly within your web browser using JavaScript. Your files and their textual content are never uploaded or transferred to our servers.
No File Storage or Content Logging
We do not store, log, or monitor any of the text files you process or the merged results. Your textual data remains confidential and private to you on your device.
Completely Free to Use
Utilize the Text File Merger as much as you need without any cost, registration requirements, or limitations on its core features.
By using this tool, you agree to our Terms of Service and Privacy Policy. We are committed to protecting your privacy and providing a secure, serverless experience for all your text merging needs.
Is there a limit to the number or size of text files I can merge?
Performance primarily depends on your web browser's capabilities and your computer's available memory (RAM). Merging a very large number of files, or individual files that are extremely large (many megabytes), could lead to slower processing or, in rare cases, browser unresponsiveness as all content is held in memory. For most typical text files, it works efficiently.
What types of text files can I merge? What is the output format?
You can upload a wide variety of text-based files, including common extensions like .txt, .csv, .md (Markdown), .log, .json, .xml, .html, .css, .js, and more. Essentially, any file that your browser can read as plain text. The merged output is always a plain text file (.txt) encoded in UTF-8.
How does the "Separator between files" work?
The separator is the text that will be inserted between the content of one file and the content of the next file in the merged output. You can use `\\n` to represent a newline character and `\\t` for a tab character. For example, `\\n---\\n` would put a horizontal rule (three dashes) on its own line between files. The default `\\n\\n` adds a blank line.
Is this Text File Merger tool secure for sensitive information?
Yes, it is designed for security. The entire process of reading file content and merging text happens client-side, directly in your web browser. Your files and their content are never uploaded to our servers or any third-party servers. Your data remains on your local machine.
What about file encodings? Will they be preserved?
The tool reads files as text using the browser's default mechanisms, which usually try to auto-detect encoding but may default to UTF-8 or the system's local encoding. The final merged output is always saved as a UTF-8 encoded .txt file. If your input files use very different or obscure encodings, you might encounter some character display issues. It's generally best if your source files are already in UTF-8 or a compatible encoding.
Can I merge CSV files and keep the structure?
Yes, you can merge CSV files. If each CSV file has a header row, you might want to merge only one header. This tool simply concatenates text content. For sophisticated CSV merging (e.g., combining columns or handling headers intelligently), a specialized CSV tool might be better. For simple appending of rows, ensure your separator includes a newline (`\\n`) if your CSV files don't end with one, to place subsequent CSV data on new lines.
