The private, browser-based metadata embedding tool
What is LeakTrap?
LeakTrap is a web application that allows users to embed hidden markers and text data into PDF documents and image files (JPG, PNG), so they can later be retrieved and used to track who shared a file or to store additional private information.
How Does It Work?
Everything works fully in the browser, with no server or file storage. Your files never leave your device, ensuring complete privacy and security.
Metadata is embedded in a highly discreet way:
In PDFs: using XMP, invisible text, and annotations
In images: via XMP, EXIF, and steganography techniques
Key Features
100% browser-based processing
No file uploads or servers
Advanced PDF metadata embedding
Image steganography (PNG, JPG)
Works offline as a Progressive Web App
Free to use
Use Cases
Track document leaks by embedding unique identifiers
Add invisible notes to documents
Store private information within image files
Create digital watermarks that don't affect the visual appearance
Technical Information
LeakTrap uses a combination of techniques to embed metadata in files:
PDF: Metadata fields, invisible text with small font size, and document properties
PNG: Appending data after the main file structure or LSB steganography
JPG: EOF technique - adding data after the JPEG EOF marker
Contact Us
Have questions or feedback? We'd love to hear from you. Please contact us at:support@konanx.com