Hide information inside image files with OpenStego, a free steganography and watermarking program.
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24 alternativesOpenPuff
Hide data in files or add watermarks with OpenPuff, a steganography program for Windows.
About OpenPuff
OpenPuff is a steganography program that hides data inside ordinary image, audio, video, Flash, and PDF files. It is listed for Windows and Linux, with a web listing also noted. Before carrier injection, the homepage describes data as encrypted, scrambled, whitened, and encoded in four layers, and it uses a multi-cryptography algorithm that combines 16 ciphers with a double password (256-bit plus 256-bit). Users can split hidden data across a chain of several carrier files, and the homepage describes a deniable mode in which less secret data serves as a decoy for more secret data.
Limits are stated on the homepage. Hidden data is capped at 256 Mb, and only enough carriers can reach that amount. Data can only be recovered with the correct carrier sequence. The homepage also describes three passwords for multi-layer obfuscation. Only the core cryptography library, libObfuscate, is described as open source. Pricing is unknown.
Key features
- Carrier chains that split hidden data across several carrier files, up to 256 Mb
- Deniable mode that uses less secret data as a decoy
- Supported carriers include BMP, JPG, PNG, MP3, WAV, MP4, FLV, SWF, and PDF files
- Four-layer protection: encryption, scrambling, whitening, and non-linear encoding
- Multi-cryptography combining 16 algorithms with a double password (256-bit plus 256-bit)
- Portable structure that needs no installation or registry keys
Best for: Users who want to hide files inside image, audio, or video carriers on Windows or Linux and can manage several carrier files and passwords.
Good for
- Portable structure that requires no installation, registry keys, or .ini files, according to the homepage
- The homepage states that the program is spyware- and adware-free and fully redistributable
- Core cryptography library (libObfuscate) is described as open source
Watch out for
- Hidden data is limited to 256 Mb, and reaching that amount requires enough carrier files
- Hidden data can only be recovered with the correct carrier sequence
- The program as a whole is not listed as open source; only the core library is described that way
OpenPuff at a glance
- Category
- Design & Creative › Photography
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Linux, Web, Windows
- Open source
- Not stated
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
OpenPuff alternatives
Tools and sites you could use instead, ranked by how closely they match.
Analyze images for steganography or embed and extract hidden data with this online image tool.
Hide text inside an image or decode embedded text with this browser-based steganography tool.
Analyze images for hidden data with Aperi'Solve, which extracts layers and bit planes for steganography checks.
Explore steganography with PNG images through this web application built with React.
Inspect image layers and bit planes with Aperi'Solve's online steganography analysis platform.
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OpenPuff FAQ
Which file types can carry hidden data?
The homepage lists image formats (BMP, JPG, PCX, PNG, TGA), audio formats (AIFF, MP3, NEXT/SUN, WAV), video formats (3GP, MP4, MPG, VOB), and Flash and Adobe formats (FLV, SWF, PDF).
How much data can be hidden?
The homepage states that up to 256 Mb can be hidden, but only if there are enough carriers available to split the data across.
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