Stego-Lab

Stego-Lab labels AI images under the EU AI Act (Art. 50) and adds steganography, EXIF editing, watermarking and batch processing for iPhone, iPad and Mac. It is made for people who want to handle sensitive material locally on their own device, without relying on external servers or cloud services. On the iPhone while travelling, at the desk on the Mac, or flexibly on the iPad — Stego-Lab offers the same capabilities on every platform. Steganography — embed content invisibly With Stego-Lab you can hide text, images or files inside photos and decode them again later. Embedded content can optionally be encrypted with a password. That makes the app suitable for private archiving, protected notes, hidden image information, documented evidence or the controlled handover of content — discreet, secure and entirely offline. Watermarking — visible and invisible Beyond invisible steganography, Stego-Lab also does visible and invisible watermarks. Single images or whole series can be marked with text or image watermarks. In batch mode, many photos are processed in one run — ideal for applying visible, invisible or combined watermarks to entire collections. On the Mac you additionally get comfortable drag-and-drop support and a larger working area. EXIF and metadata editing A second focus is thorough EXIF and metadata editing. Stego-Lab reads, displays and selectively edits image metadata — description, creator, copyright, software, camera make and model, lens data, capture date and GPS information. Metadata can be adjusted and exported under the same or a changed file name. This makes Stego-Lab useful for photographers, archivists, content creators and privacy-minded users who want to stay in full control of their image data. Supported formats Stego-Lab handles the common image formats PNG, TIFF, JPG/JPEG and HEIC, plus many RAW formats. For invisible content and lossless further processing, PNG and TIFF are the formats of choice. On iOS and iPadOS, files come from the photo library or the Files app; on the Mac, the familiar Finder access is available as well. Exported results can be shared, saved directly or fed into existing workflows. Local processing — no cloud, no compromises Stego-Lab works exclusively on your device. Content is never transmitted to external servers. That makes the app particularly attractive wherever privacy, control over your data and offline availability matter. A clear interface for every level of experience The app is organised into Encode, Decode, EXIF, Batch and Info. Newcomers and advanced users alike can run complex image workflows straight on iPhone, iPad or Mac — no extra desktop software required. Free and Pro Included for free: • Visible text or logo watermark for a single image • Label AI images under the EU AI Act (Art. 50): visible label and metadata • Delete all metadata with one click • Simple text decoding • Read EXIF and edit the core fields • Import from Photos and Files Stego-Lab Pro – a one-time in-app purchase, no subscription – unlocks: • Invisible embedding of text, images and files, optionally password-protected (AES-256-GCM) • Image and file decoding and password-protected content • Batch processing of multiple images, including metadata deletion • Robust invisible AI labelling and batch labelling • Visible and invisible watermarks combined • The full EXIF editor including camera and GPS fields • Direct camera capture Stego-Lab brings privacy, creative image editing and technical image analysis together in a single app — across the whole Apple ecosystem. Whether you protect content, control metadata, mark series of images or manage hidden information: Stego-Lab gives you a focused, capable toolbox — right on your device.