WAV Audio LSB Steganography Hider

Audio LSB (Least Significant Bit) steganography is a technique for hiding secret data inside digital audio files by replacing the least significant bits of each audio sample with bits from the hidden message. Since the LSBs have the smallest impact on the overall sample value, the modification is imperceptible to human hearing. A typical 16-bit WAV file stores each sample as a 16-bit integer. Changing bit 0 (the LSB) of each sample alters the amplitude by only 1/65536th of the full range - far below the threshold of human hearing perception.

Our tool parses a WAV file to identify its format (PCM), sample rate, bit depth (8/16/24-bit), number of channels (mono/stereo), and the start of the audio data section. In Hide mode, your secret message is encoded as UTF-8 bytes, optionally XOR-scrambled with a password, and a 4-byte null terminator is appended. Each bit of this encoded data is then written into the LSB positions of consecutive audio samples. In Extract mode, the tool reads LSBs from each sample, reconstructs the bytes, finds the terminator, and optionally XOR-decrypts using the password. All processing is done client-side. No data is uploaded to any server.

1 LSB provides maximum stealth - only 1 bit per sample is modified, making detection extremely difficult. A 3-minute stereo 16-bit WAV at 44100Hz can hide approximately 1.9 MB using 1 LSB. 2 LSBs doubles capacity but introduces slightly more noise. 4 LSBs offers maximum capacity (~7.7 MB for 3 minutes) but the noise becomes potentially detectable by spectral analysis. The offset parameter lets you skip samples at the start of the audio, useful for files with leading silence or to make extraction harder without knowing the offset. Thechannel selection (left, right, or both) works with stereo files for additional control.

This tool runs entirely in your browser. Your audio files, secret messages, and stego outputs are never uploaded to any server.Important limitations: The tool only supportsuncompressed PCM WAV files. Compressed formats like MP3, AAC, FLAC, or OGG Vorbis are not supported because their lossy compression would destroy LSB-hidden data. After hiding, the modified WAV file can be played normally, but converting to a lossy format will corrupt the hidden message. The extracted message quality depends on correct settings - always use the same bit depth, channel, offset, and password that were used when hiding.