Batch File Obfuscator

Batch file obfuscation is the process of transforming multiple files simultaneously using encoding techniques to make their content less readable while keeping them functionally usable. Unlike single-file obfuscation, batch obfuscation applies consistent transformations across an entire project or file collection, ensuring that related files remain compatible with each other after obfuscation. The Batch File Obfuscation Tool supports multiple encoding methods including Base64, hex encoding, ROT13 cipher, reverse text, Unicode escapes, and character substitution. Each method produces differently obfuscated output while maintaining the ability to restore the original content through the corresponding deobfuscation process.

1. File Upload - Drag and drop or browse to select multiple files of any type. The tool reads each file as text, displaying them in a file list with names, sizes, and types. You can add or remove files at any time before processing.
2. Obfuscation Selection - Choose a global obfuscation method for all files, or configure each file individually. Methods include: Base64 encoding (produces standard Base64 output), Hex encoding (converts to hexadecimal representation), ROT13 cipher (rotates alphabetic characters by 13 positions), Reverse text (reverses character order), Unicode escapes (converts to \\uXXXX format), and Character substitution (shifts ASCII values by a configurable offset).
3. Processing - Click the obfuscate button to transform all files at once. Each file is processed independently with its chosen method. A progress indicator shows the processing status for each file. Summary statistics show total files processed and total size transformed.
4. Download Results - After processing, you can download files individually by clicking on each file, or download all files as a single ZIP archive. Each file retains its original name with an obfuscation method indicator added to the filename for easy identification.

• Base64 Encoding: Encodes file content as Base64 using the standard alphabet. The most common obfuscation method, producing compact output with recognizable padding (= characters). Easily reversed using any standard Base64 decoder.
• Hex Encoding: Converts each byte of the UTF-8 representation to a two-character hexadecimal value. Produces the most expanded output (2x original size) but is the simplest to implement and reverse.
• ROT13 Cipher: Shifts each alphabetic character by 13 positions (A-N, M-Z). ROT13 is its own inverse - applying it twice returns the original text. Only affects letters; numbers and special characters pass through unchanged.
• Reverse Text: Reverses the character order of the entire file content. Simple but effective obfuscation that defeats casual reading. Each word appears backwards, making the content difficult to scan quickly.
• Unicode Escapes: Converts each character to its Unicode escape sequence (\\uXXXX format). Produces very verbose output but makes the content completely unreadable at a glance while being trivially reversible.
• Character Substitution: Shifts each character's ASCII value by a configurable offset (1-25). Similar to ROT13 but with a customizable shift value. Different offsets produce different obfuscation results from the same input.

This tool runs entirely in your browser using client-side JavaScript. Your files, uploaded content, processing results, and any sensitive data within your files are never uploaded to any server, stored in any database, or transmitted over the network. All Base64 encoding, hex conversion, ROT13 cipher operations, reverse text processing, Unicode escape generation, character substitution, ZIP archive creation, and individual file downloads execute locally on your device. There are no API calls, analytics tracking, cookies, or data collection of any kind. This makes it completely safe for obfuscating proprietary code, confidential configuration files, or sensitive project documents.