Top Secret #1 : PNG / JPEG / PDF to cover secret data
- 💎 Store secret data into a cover file (hide inside an image or a PDF document).
- 😉 Keep your passwords easy to remember.
- 💤 Sleep on your two ears.
This JPEG photo of my daughters (2560x1920 pixels) actually contains 2 secret files :
- another JPEG image (332,720 bytes)
- a PDF document (70,384 bytes)
 Before secret data encoding: |  After secret data encoding: |
The visual impact is totally imperceptible.
The file size increase is only 145kB for a secret size of 403kB
Download the latest version now!
Store securely...
- secret files
- crypto keys
- seed phrases
- 2FA backup keys
- transmit mail-filtered files
- share multi-secret file infos
...into some innocent vacation or family photos or PDF documents. It can now be stored in the cloud and kept secure !
Strong encryption and low-noise generation
Strong encryption (AES) along with strong hash algo.
The image encoding process uses a semi-random positional algo to place the bit stream into the piture's items at low-level noise.
The available space to hide data into an image depends on the image itself. Higher resolution, higher space. For JPEG, more details, more space !
The PDF encoding inserts new keys into internal maps. No visual impact, no embedded files. Even PDF editors do not show these infos.
The available space to hide data into a PDF file is only limited to 2GiB.
Works for both JPEG & PNG images and PDF files.
Retrieve your secrets with 2 security factors :
- Master password + Hash algo (file en/decoding)
- Data password (data en/decoding)