Why Stego-Lab

Stego-Lab brings together workflows that are usually scattered across multiple apps: invisible steganography, visible watermarking, EXIF editing, decoding, and batch processing.

Stego-Lab fuehrt Workflows zusammen, die sonst auf mehrere Apps verteilt sind: unsichtbare Steganographie, sichtbare Watermarks, EXIF-Bearbeitung, Dekodierung und Batch-Verarbeitung.

It is built for creators, photographers, forensic-minded users, and technical image workflows that need local processing and careful export control across iPhone, iPad, and Mac.

Core Features

Area	What it does	Best used for
Encode	Embed hidden text, images, or files into a carrier image	invisible payload workflows
Decode	Extract hidden text, images, or files again	verification and recovery
EXIF	Read, inspect, edit, and re-save metadata	metadata cleanup or controlled edits
Batch	Apply visible, invisible, or combined watermarks to many images	repeatable production workflows
Info	App details, support, upgrade path, version summary	release and support visibility

Workflow Highlights

Encode	Decode
Hide text, images, or files inside carrier images	Recover hidden content from encoded images
Optional password protection before embedding	Text stays free, advanced payloads are Pro
Capacity and formula feedback while preparing payloads	Supports text, image, and file recovery

EXIF	Batch
Inspect and edit EXIF, TIFF, and GPS metadata	Apply visible, invisible, or combined watermarks
Save under same or different export names	Use text or image-based watermark inputs
Useful for cleanup, relabeling, and metadata control	Designed for repeatable multi-image output

Screenshots

App Store-ready screenshot sets are available for iPhone, iPad, and macOS in German, English, and French under generated/app_store_screenshots/.

Encode	Decode	EXIF
Batch	Stego-Lab Pro	Info

macOS Encode

macOS Decode

macOS Batch

Formats and Export Logic

Use case	Recommended formats	Notes
Invisible payloads	PNG, TIFF	lossless export keeps hidden data reliable
Visible-only workflows	PNG, TIFF, JPG	JPG is suitable when no hidden payload must survive
Import	JPG, PNG, TIFF, HEIC, many RAW variants	depends on iOS and ImageIO support

Demo Asset

An encoded sample image for manual decode checks is available under docs/demo/DemoPicture_WhiteTiger-BlackCat.PNG. Keep demo assets public-safe: no private payloads, secrets, or reusable real-world passwords.

Free vs Pro

Free	Pro
visible text watermarks	invisible steganography
visible image/logo watermarks	hidden text, image, and file payloads
simple text decode	password-protected payload workflows
basic EXIF read and edit	image and file decode
import from Photos and Files	batch processing
visible export workflows	combined visible plus invisible workflows
	full EXIF editor including GPS

Planned Pro product identifier: com.raith.photovault.pro

Privacy

Stego-Lab runs entirely on your device. Nothing leaves your Mac.

• No network requests. The app does not contact any server, ever. No update pings, no check-ins.
• No tracking. No analytics, no telemetry, no advertising identifiers, no crash reporters that phone home.
• No cloud. No cloud storage, no synchronization — your carrier images, payloads, and passwords never leave local disk.
• No account. No sign-in, no registration, no email collection, no online activation.
• App Store Privacy Nutrition Label: Data Not Collected.

See Privacy Policy for the formal statement.

Documentation