File Obfuscator
Password-based file obfuscation tool using SHA-256 + XOR streaming encryption. Use the same password to encrypt and decrypt, supports large files, no server uploads.
Select File
Click or drag files here
No file selected
Result
All file processing is done locally in your browser. No uploads, no logging, no data collection.
FAQ
How do I encrypt a file?
Select or drag any file into the upload area, enter a password (default "waludo"), then click "Process". The tool will apply SHA-256 + XOR streaming obfuscation, and the processed file will download automatically with a .waludo extension appended.
How do I decrypt a file?
Decryption works exactly the same as encryption. Select a file ending with .waludo, enter the same password used during encryption, and click "Process" to restore the original file. Since XOR is naturally symmetric, encryption and decryption follow the same flow.
How does the tool know if my file is encrypted or not?
The tool checks the .waludo file extension. If the filename ends with .waludo, it treats the file as encrypted and removes the suffix after decryption. Otherwise, it treats the file as unencrypted and appends the suffix after processing.
Is this file obfuscation tool secure?
Yes, the entire process runs in your browser. Files are never uploaded to any server, and we never log any data. The tool uses SHA-256 key derivation with streaming XOR, capable of handling files of any size.
What's the difference between obfuscation and encryption?
Both work on a similar principle — converting original data into an unreadable form. However, encryption typically refers to industry-standard strong algorithms (like AES), while obfuscation focuses on making data unintelligible. This tool uses XOR streaming transformation, sufficient for general use, but not recommended for highly sensitive data.
How do I handle very large files?
This tool uses streaming processing — files are not loaded entirely into memory. In browsers supporting the File System Access API (Chrome, Edge), there is virtually no file size limit. Fallback mode (Firefox, Safari) is limited by browser memory; we recommend keeping files under 500MB.
Can I recover a file if I forget the password?
No. The password is the only credential for decryption — please keep it safe. If you forget the password, the file cannot be recovered.
Can I use it offline?
Yes! Once the page loads, all processing works offline — no internet connection required.
Why Choose Us
- ✦ Truly local processing — your file never leaves your browser, no servers, no databases, no logs
- ✦ Streaming for large files — supports GB-level file processing (Chrome/Edge required), won't crash due to memory
- ✦ Same password for encrypt & decrypt — SHA-256 key derivation, XOR is naturally symmetric, encrypt = decrypt
- ✦ Completely free & open source — no registration, no login, unlimited usage, transparent code