JPG Sponge

JPG Sponge is an easy encrytion and decryption freeware. Using this tool, you can insert (encrypt) your message into a JPG file, or extract (decrypt) your message from a JPG file.

1. Encryption

1.1. Enter or copy/paste your message of any language (min 5 characters, max 500 characters) in the textbox.

1.2. Click Encrypt button to select a JPG file (min 1MB, max 5MB), for example, sample.jpg.

1.3. Enter an alphanumeric and case-insensitive password (min 8 characters, max 12 characters), for example, q1w2e3r4, then click Continue button.

1.4. Start encryption.

1.5. A new JPG file is generated, for example, 1128978-2991520.jpg. Your message is inserted into this file. Warning: Never rename this file!

2. Decryption

2.1. Click Decrypt button to select a JPG file, for example, 1128978-2991520.jpg.

2.2. Enter the same password, for example, q1w2e3r4, then click Continue button.

2.3. Start decryption.

2.4. Your message will be extracted from this file and displayed in the textbox.

2.5. [*] is a rare mark which means that a character of your message can not be encrypted and decrypted.