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Straight answers about AI watermarks, invisible characters in AI text and the metadata hiding in your files.

• What is an AI watermark?

  An AI watermark is a signal that marks content as AI-generated. It can be a visible logo, an invisible pattern hidden in the pixels or words (like…

• Does ChatGPT watermark its text?

  OpenAI has said it does not add a hidden watermark to ChatGPT text. What people find in copied answers are invisible Unicode characters, such as…

• What is a zero-width space?

  A zero-width space is an invisible Unicode character (U+200B) that takes up no space on screen. It tells software where a line may break, but when it…

• Why does text copied from ChatGPT break formatting?

  Text copied from ChatGPT carries leftover Markdown (like ** and ##), typographic spaces and invisible characters. Word, Google Docs, email clients…

• What is SynthID?

  SynthID is an invisible watermark from Google DeepMind that is embedded in content made by Google's AI tools, including Imagen images, Veo video,…

• What are C2PA Content Credentials?

  C2PA Content Credentials are a tamper-evident record attached to an image, video or document that says how it was created and edited, including…

• What is EXIF data?

  EXIF data is information your camera or phone saves inside every photo, such as the date, device model, camera settings and often the exact GPS…

• What metadata is in a PDF?

  A PDF usually stores the author's name, the document title, the app that created it, creation and edit dates, and an XMP block that can hold more…

• Can you tell if an image is AI-generated?

  Sometimes. Many AI tools label their images: OpenAI, Adobe Firefly, Google and Microsoft add C2PA Content Credentials, and Stable Diffusion tools…

• Do AI text detectors work?

  Not reliably enough to prove anything. AI text detectors guess from writing style, so they miss AI text that has been edited and they flag human…

• How to check if a video was made with AI

  Check three things: a visible watermark in the frame, the labels stored in the file (C2PA Content Credentials and software tags), and an invisible…