{
  "asOf": "2026-09-25",
  "source": "ImageClueCheck editorial research, see docs/seo/keywords.md and each page’s sources",
  "rows": [
    {
      "slug": "png",
      "name": "PNG",
      "title": "What metadata can a PNG file hold?",
      "facts": {
        "Plain text metadata": "tEXt, zTXt (compressed), iTXt (international) chunks",
        "EXIF support": "Optional eXIf chunk, added in a later PNG specification revision",
        "C2PA support": "Supported via a dedicated chunk in tools that implement it",
        "Common use in AI tooling": "Stable Diffusion UIs writing prompt/seed/sampler data as plain text"
      }
    },
    {
      "slug": "jpeg",
      "name": "JPEG",
      "title": "What metadata can a JPEG file hold?",
      "facts": {
        "EXIF storage": "APP1 segment, defined by the CIPA EXIF specification",
        "XMP storage": "Separate APP1 segment, common in editing software",
        "Effect of re-encoding": "Fields can be dropped or altered depending on the tool",
        "Common use": "Camera make/model, capture settings, timestamps, GPS"
      }
    },
    {
      "slug": "webp",
      "name": "WebP",
      "title": "Does WebP support EXIF and other metadata?",
      "facts": {
        "EXIF storage": "Optional EXIF chunk in the RIFF container",
        "XMP storage": "Optional XMP chunk in the RIFF container",
        "Consistency across tools": "Less consistent than JPEG; many converters drop these chunks",
        "Common use": "Growing on the web for smaller file sizes; metadata support varies by tool"
      }
    }
  ]
}