Claude will now watermark all content generated using its tools

New Atlas | Aug 25, 2026 at 6:20 AM
  • Roughly three-quarters of newly published web pages now carry some machine-written text.
  • Text will carry an invisible statistical watermark, while supported visual formats (such as PNG, JPG, or SVG) will receive signed metadata noting that Claude was involved.
  • When Claude generates formats such as a PNG, JPG, or SVG, it attaches a cryptographically signed note in the file’s metadata under the open C2PA standard.