Disclosure Tools is a focused, browser-based alternative to generic metadata editors. It adds and verifies Amazon's contains-synthetic-performer disclosure keyword in XMP dc:subject for up to twenty JPG or PNG files at once. Images never leave your device, existing metadata and compressed pixels are preserved, and verified results can be downloaded individually or as a ZIP. Lightweight checks flag size, color space, DPI, and animation without blocking tagging. Not affiliated with Amazon.
