| AnimationMetadata | Mutable animation-wide settings of an animated image. |
| CicpColorDescription | An immutable set of coding-independent code points (ITU-T H.273, ISO/IEC 23091-2) that describes how the color samples of an image are to be interpreted: color primaries, transfer characteristics, matrix coefficients and sample range. |
| ContentLightLevel | An immutable content light level (CTA-861.3, the clli box of ISO/IEC 14496-12): the upper bounds of the light level of high dynamic range content, in candelas per square meter. |
| ExifProfile | An immutable EXIF profile: the TIFF-structured EXIF data, starting with the TIFF byte-order header (II*\0 or MM\0*). |
| FrameMetadata | Mutable per-frame settings of a displayed frame. |
| GainMapChannel | The parameters of one channel of a gain map (ISO 21496-1, the hdrgm XMP namespace of Adobe and Ultra HDR): how the samples of the gain map image become the gain that turns the base image into the alternate image. |
| GainMapMetadata | The parameters of a gain map (ISO 21496-1, the hdrgm XMP namespace of Adobe and Ultra HDR): an image stored next to a base image, which gives the gain that turns the base image into an alternate rendition, typically a standard dynamic range photo into its high dynamic range version. |
| IccProfile | An immutable, uncompressed ICC color profile. |
| ImageMetadata | Mutable image-wide metadata: orientation, resolution, pixel aspect ratio, color profile, transfer function, CICP color description, content light level, mastering display color volume, EXIF, XMP and text entries. |
| ImageResolution | An immutable physical resolution, in dots (pixels) per inch. |
| ImageTextEntry | An immutable textual metadata entry (PNG tEXt/zTXt/iTXt chunk, GIF comment extension, JPEG COM segment). |
| MasteringDisplayColorVolume | An immutable mastering display color volume (SMPTE ST 2086, the mdcv box of ISO/IEC 14496-12): the color primaries, the white point and the luminance range of the display on which high dynamic range content was mastered. |
| MetadataBlob | An immutable sequence of metadata bytes (EXIF, XMP, ICC...). |
| OpenExrWindows | The immutable windows of an OpenEXR file (its dataWindow and displayWindow attributes), in the pixel coordinates of the file: the corners of each window, both inclusive. |
| PixelAspectRatio | An immutable pixel aspect ratio (the pasp box of ISO/IEC 14496-12): the relative width and height of a pixel, for images whose pixels are not square. |
| XmpProfile | An immutable XMP packet, stored as UTF-8 bytes without container-specific prefixes. |