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Photo Metadata Guide

What Information Is Stored in a Photo?

Every digital photo carries invisible data blocks embedded in its file container. Here is what cameras, phones, and AI generators write into your pictures.

What Data Does a Photo Contain?A standard digital photo contains up to five distinct categories of hidden metadata: camera exposure settings (EXIF), exact geographical GPS coordinates, capture date and time stamps, creator and copyright credits (IPTC/XMP), and software editing or AI generation parameter recipes. These data blocks travel with the file whenever it is emailed, uploaded, or messaged uncompressed.

1. Camera Equipment & Exposure Telemetry (EXIF)

When you press the shutter, modern cameras and smartphones write technical capture parameters into the Exchangeable Image File Format (EXIF) headers (typically within JPEG APP1 markers or TIFF IFD directories).

  • Hardware Make & Model: The exact device (e.g., Apple iPhone 15 Pro, Sony ILCE-7RM4).
  • Lens Specifications: Focal length, maximum aperture, and model identifier.
  • Exposure Settings: Shutter speed, ISO sensitivity, F-number, and exposure bias.
  • Hardware Serial Numbers: Often recorded in proprietary manufacturer MakerNotes, allowing cross-photo device fingerprinting.

2. Physical Geolocation Coordinates (GPS IFD)

If location permissions are enabled, your phone or GPS-enabled camera writes satellite fix telemetry into the EXIF GPS IFD (tag 0x8825):

  • GPSLatitude & GPSLongitude: Precise geographic coordinates pinpointing capture location within meters.
  • GPSAltitude: Height above sea level.
  • GPSTimeStamp: Exact atomic clock UTC time.

3. Author, Artist & Studio Attribution (IPTC & XMP)

Stock agencies, editing applications, and professional photographers embed rights and attribution metadata through IPTC IIM and Adobe XMP (Extensible Metadata Platform) XML packets:

  • dc:creator / Author Byline: The real name, studio name, or account handle of the creator.
  • dc:rights: Copyright declaration and licensing terms.
  • photoshop:Credit: Agency or syndication credits.

4. AI Generation Prompts, Seeds & Node Graphs

Generative AI tools (such as Stable Diffusion, ComfyUI, DALL-E, and Midjourney) save generation instructions directly into image files:

  • PNG Text Chunks: Stored in parameters, prompt, or workflow chunks, containing positive/negative prompts, seed numbers, CFG scales, and full ComfyUI node graphs.
  • EXIF UserComment: Midjourney CLI prompt directives (--v 6.0 --ar 16:9).
  • C2PA Provenance Manifests: Cryptographic Content Credentials (APP11 / caDX) declaring that the media was algorithmically generated.

How to Inspect What Your Photo Contains

You do not need to install complex desktop software or upload photos to cloud servers to inspect their metadata. Our browser-based Image Metadata Viewer and Image Privacy Checker parse these binary headers locally in your browser's memory with zero server uploads.

Inspect Your Photo's Hidden Data

Audit EXIF, GPS, author credits, and AI parameters privately in your browser.

Open Metadata Viewer