Stego – Private Steganography On Your Device
ON-DEVICENO CLOUD UPLOADSTEGO PRO
Hide and extract UTF-8 text (and images) inside cover photos—processed locally on your phone. Your hidden content is not uploaded to Japality Limited servers.
Free vs Pro: Stego is free with ads. Stego Pro (monthly or yearly subscription) removes banner, interstitial, and app-open ads. See Terms for auto-renewal details.
Key Features
Hide Text & Images
Embed secret text or another image in a cover photo. Export as PNG for best reliability.
Multiple Algorithms
LSB, DCT, GN-QIM, and multi-layer modes for different image types and robustness needs.
Integrity Checks
CRC and optional error correction help detect corrupted payloads early.
Social Media Mode
Optional resize before embedding for chat-app sharing workflows.
On-Device Privacy
Stego operations stay on your device. See Privacy Policy for ads & subscription data handled by Apple, Google, and partners.
Stego Pro
Subscribe to remove ads and support development. Manage in App Store / Play settings.
FAQ
Does the app upload my images?
No. Japality Limited does not receive your cover images or hidden payloads. Third-party ad and payment services have separate policies—see our Privacy Policy.
Are there ads?
Yes, on the free tier via Google AdMob. Stego Pro removes in-app ads.
What format should I use?
PNG is recommended. Re-saving or sharing through apps that recompress JPEG/HEIC can destroy hidden data.
Is this encryption?
No. Steganography hides data in images; it does not encrypt against someone who has the file. Use additional encryption if you need secrecy.
Hong Kong legal use
You must comply with Hong Kong and applicable laws. Do not conceal unlawful content.