- EXIF
- Exchangeable Image File Format — a standard for storing camera metadata inside JPEG, TIFF, and WebP files, including GPS coordinates, shutter speed, aperture, ISO, and camera make and model.
- GPSInfo block
- A sub-IFD within the EXIF data structure that stores GPS latitude, longitude, altitude, timestamp, and bearing recorded at the moment the shutter was pressed.
- Maker notes
- A proprietary EXIF tag (MakerNote) that camera manufacturers use to store brand-specific data such as focus modes, custom functions, and lens serial numbers. Contents vary by manufacturer and are not part of the EXIF standard.
- ICC profile
- An International Color Consortium file embedded in an image that describes the colour space in which the image was captured or edited. Stripping it typically has no visible effect for sRGB images displayed on screen.
- XMP metadata
- An Adobe-developed metadata format embedded in image files that stores editing history, copyright notices, keywords, and ratings. XMP data is separate from EXIF and is also removed during Canvas re-encoding.
- Canvas re-encode
- The process of drawing an image onto an HTML5 Canvas element and then exporting it via toDataURL or toBlob. This produces a new file containing only pixel data, stripping all embedded metadata from the original container.