Incrypt: Web-Based Image Steganography Tool

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Incrypt allows you to encode secret messages inside images and decode them later using only your browser.

What Is This?

Incrypt is a client-side steganography tool. It lets you:

• Upload an image (PNG/JPG)
• Hide a secret text message inside that image using the Least Significant Bit (LSB) method
• Optionally enable pointillist mode for a creative, obfuscated result
• Download the result
• Re-upload and decode any stego-image to reveal the hidden message

All processing happens locally in your browser—your data never leaves your device.

How To Use It

1. Upload an Image: Click the "Choose File" button and select any image from your device.
2. Enter Your Message: Type the message you want to hide in the textarea below the file input.
3. (Optional) Toggle Pointillist Mode: Use the "Use pointillist mode" checkbox to enable or disable the pointillist effect. When enabled, the image will be stylized with colored dots over a darkened version of the original image. The settings for this mode are fixed for maximum compatibility.
4. Click Encode: This embeds your message into the image and creates a downloadable link.
5. Decode a Stego Image: Upload a previously encoded image and click the Decode button. The hidden message will appear in the output box. The tool automatically detects if pointillist mode was used.

How It Works

• Your message is converted to bytes and its length is stored in the image.
• The message is encoded into the image's pixel data using the Least Significant Bit (LSB) method.
• If pointillist mode is enabled, the image is first stylized with colored dots over a darkened version of the original image, then the message is embedded.
• A 1-byte header is embedded to indicate if pointillist mode was used, so decoding is always automatic and reliable.

Output

• The result is a PNG image with your message embedded.
• Anyone with this tool can decode the message, regardless of the mode used.

Privacy & Security

• Completely client-side
• No data is sent to any server
• Works offline once loaded

Tips

• For stealth, use normal mode (pointillist off) for minimal visual change.
• For obfuscation, use pointillist mode for a creative, artistic look that disguises the message.
• Avoid overly compressed formats like JPG for encoding, as compression can damage hidden data.