Hide data in files or add watermarks with OpenPuff, a steganography program for Windows.
OpenStego
Hide information inside image files with OpenStego, a free steganography and watermarking program.
About OpenStego
OpenStego is a free steganography tool for working with image files. It provides two main functions: data hiding and watermarking. The site is available in English and Spanish and includes screenshots showing each operation. A Concepts page provides additional background.
With data hiding, you can hide a data file inside a cover image and later extract the data from the image. With watermarking, which is listed as beta, you can generate a signature file, embed an invisible signature in images, and verify that signature later to detect unauthorized copying.
OpenStego suits people who need to conceal information in images or add invisible marks to image files. It fits basic photography and file-handling use where hiding data or checking image origin is needed.
Key features
- Hide data files inside cover image files
- Extract hidden data from images
- Generate signature file for watermarking
- Embed invisible signature in images (beta)
- Verify image watermark to check copying
Best for: People who need to hide files in images or add invisible watermarks to images benefit most.
Good for
- Free steganography solution
- Covers both data hiding and watermarking
- Available in English and Spanish
- Includes screenshots for each operation
Watch out for
- Watermarking is listed as beta
OpenStego at a glance
- Website
- openstego.com
- Category
- Design & Creative › Photography
- Type
- Online tool
- Pricing
- Free
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
OpenStego alternatives
Tools and sites you could use instead, ranked by how closely they match.
Hide text inside an image or decode embedded text with this browser-based steganography tool.
Analyze images for steganography or embed and extract hidden data with this online image tool.
Explore steganography with PNG images through this web application built with React.
Encode information in image, audio or video files with stegpy, a program based on the least-significant-bit method.
Open source
24 alternativesInspect image layers and bit planes with Aperi'Solve's online steganography analysis platform.
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OpenStego FAQ
What is OpenStego?
OpenStego is a free steganography solution that hides data in cover files such as images and adds invisible watermarks to images.
How do you hide and retrieve data with OpenStego?
You hide a data file inside an image, then extract the data from the image later using data hiding mode.
How does OpenStego watermarking work?
You generate a signature file, embed it as an invisible signature in images, and verify it later to detect unauthorized copying. Watermarking is listed as beta.
Is OpenStego available in Spanish?
Yes, the site offers English and Spanish language options.
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