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TIFF (.tiff, .tif)

Updated in 14.1
  • Import and Export fully support the TIFF 6.0 specification.

Background & Context

    • Registered MIME type: image/tiff
    • TIFF raster image format.
    • Commonly used in image manipulation applications, page layout applications, scanners and other imaging devices, and for the archiving of images.
    • Suitable for high-color-depth images.
    • TIFF is an acronym for Tagged Image File Format.
    • Binary format.
    • Supports multiple color resolutions, color encodings, color palettes, and compression methods.
    • Supports floating-point images with 32 and 64 bits per channel.
    • Can store multiple images.
    • Supports alpha channels.
    • Introduced in 1986 by Aldus.

Import & Export

  • Import["file.tiff"] imports a TIFF file, returning a single Image object or a list of images.
  • Import["file.tiff",elem] imports the specified element from a TIFF file.
  • The import format can be specified with Import["file","TIFF"] or Import["file",{"TIFF",elem,…}].
  • Export["file.tiff",expr] exports an image, graphics, or any other expression as an image to a TIFF file.
  • Export["file.tiff",{expr1,expr2,…}] exports a list of expressions as a multi-image TIFF file.
  • Export["file.tiff",Manipulate[…]] exports a list of frames from an animated demonstration of a Manipulate object.
  • Image objects are by default exported at their full raster size. Graphics and other arbitrary expressions are exported using the same raster size as their displayed form.
  • See the following reference pages for full general information:
  • Import, Exportimport from or export to a file
    CloudImport, CloudExportimport from or export to a cloud object
    ImportString, ExportStringimport from or export to a string
    ImportByteArray, ExportByteArrayimport from or export to a byte array

Notebook Interface

  • In the notebook front end, Insert ▶ Picture and the Open menu allow import of a TIFF file into a cell.
  • Save Selection As exports the selected part of a notebook as a TIFF file.

Import Elements

  • General Import elements:
  • "Elements" list of elements and options available in this file
    "Summary"summary of the file
    "Rules"list of rules for all available elements
  • Data representation elements:
  • "ColorMap"color reduction palette
    "Data"array of pixel values
    "Graphics"the first image in the file, given as graphics
    "Image"first image in the file, represented as an Image object
    "RawData"array of color map indices
    {"Thumbnail",size}thumbnail of the first image (default size = Small)
  • Data representation elements for multi-image TIFF files:
  • "Animation"multi-image TIFF represented as an animation object
    "Image3D"images in the file, represented as an Image3D object
    {"GraphicsList",frames}images as a list of graphics (default frames=All)
    {"ImageList",frames}a list of images (default frames=All)
    {"ThumbnailList",frames,size}a list of thumbnails (default frames=All, size=Small)
  • Import by default uses "Image" for single-frame TIFF files and "ImageList" for multi-frame TIFF files.
  • Import of a multi-image TIFF with element "Graphics" or "Image" gives the first image.
  • Export by default generates a multi-image TIFF if the expression supplied is a list of Graphics or Image objects.
  • Export with element "Graphics" or "Image" always generates a single-image TIFF.
  • Advanced Import elements:
  • "BitDepth"bits used to represent each color channel in the file
    "CameraTopOrientation"
  • orientation of the camera when the picture was taken
    • "Channels"
  • the number of color channels used in the file
    • "ColorProfileData"embedded color profile, given as a ColorProfileData object
    "ColorSpace"color encoding used in the file
    "FlashUsed"
  • whether the flash was fired
    • "GeoPosition"
  • latitude and longitude represented as GeoPosition object
    • "GPSDateTime"
  • image creation date and time registered by GPS
    • "ImageCount"number of images in the file
    "ImageEncoding"how images are compressed in the file
    "ImageResolution"image resolution specified in the file
    "RasterSize"raster dimensions
    "Summary"
  • summary of the file
    • "SummarySlideView"slide view summary of all frames
  • Metadata elements:
  • "Exif"formatted Exif (Exchange image file format)
    "IPTC"formatted IPTC (International Press Telecommunications Council)
    "XMP"formatted XMP (Extensible metadata platform)
    "MetaInformation"combination of all formatted metadata present in the file
  • Raw metadata, as stored in the file, can be imported using "RawExif", "RawXMP", and "RawIPTC" elements, returned as an association.
  • All Exif and IPTC tags can be imported individually. Common tags include:
  • "ApertureValue"lens aperture
    "DateTime"image creation date and time
    "ExposureTime"exposure time, given in seconds
    "FNumber"F number
    "FocalLength"actual focal length of the lens, given in millimeters
    "Make"manufacturer of the recording equipment
    "Model"model name or model number of the equipment
    "Software"name and version of the software or firmware of the camera or image input device used to generate the image
  • For multi-image TIFF files, the above data representation and metadata elements are taken to be lists of the respective expressions.

Options

  • Import and Export options:
  • ImageResolutionAutomaticresolution used for rendering the graphics
    IncludeMetaInformationAllmetadata types to import and export
    "ImageTopOrientation"Automaticorientation of the image as stored in the file
    RasterSizeAutomaticdimensions of the image
  • Import option:
  • "TakeRows"{1,-1}rows to import
  • Export options:
  • ByteOrdering-1ordering of bytes in the file
    "BitDepth"Automaticbit depth per channel used to store image data
    "ColorMapLength"Automaticnumber of colors to use for quantization
    "ColorSeparation"Falsewhether to store color channels in separate planes
    ColorSpaceAutomaticcolor encoding to be used in the file
    CompressionLevelAutomaticcompression level, given as a number between 0 and 1
    Dithering"FloydSteinberg"dithering algorithm used for generating the color-reduction table
    "DifferencingPredictor"Falsewhether to use horizontal differencing when using LZW or ZIP compression
    "ImageEncoding""ZIP"how images are compressed in the file
    "QuantizationMethod"Automatica method to use for quantization
  • Export["file.tiff",expr] creates a TIFF image with the same image size as the displayed form of expr.
  • Supported "ColorSpace" settings are: "Grayscale", "RGB", "CMYK", and "LAB".
  • Supported "BitDepth" settings are: Automatic, 1, 8, 16, 32, and 64.
  • By default, "Bit" images are exported to 1-bit, "Byte" images are exported to 8-bit, and other types are exported to 16-bit TIFF files.
  • The following settings for "ImageEncoding" are supported:
  • Noneno compression
    "JPEG"lossy JPEG compression
    "LZW"lossless LZW compression
    "PackBits"PackBits run-length encoding method
    "ZIP"lossless ZIP image data compression
  • Detailed properties and settings for exporting a Manipulate:
  • "ControlAppearance"Automatichow Manipulate control elements are rendered in the exported file
  • The following settings can be given for "ControlAppearance":
  • Automaticcaptures user controls exactly as seen in the notebook interface, using the style elements of the local computer system
    "Generic"renders graphical controls in a generic style
    Noneexcludes control elements when exporting an animation

Examples

open allclose all

Basic Examples  (5)Summary of the most common use cases

This imports a TIFF example file, rendering it as an Image:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-ge4
Out[1]=1

Summary of the image:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-pyg532
Out[1]=1

Export an image to TIFF:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-9sfral
Out[1]=1

Import a multi-frame TIFF file as an animation:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-1gp0s7
Out[1]=1

Create a multi-frame TIFF file from a list of images:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-cdd4s
Out[1]=1

Scope  (8)Survey of the scope of standard use cases

Show all elements available in the file:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-yikq5c
Out[1]=1

Available Exif elements:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-e619fh

Available IPTC elements:

In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-txorq8

Import image metadata:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-xpmhcz
Out[1]=1

Export a binary image:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-ea0u9q
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-hcke4u
Out[2]=2

Export a real-valued RGB image:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-jmwxdo
Out[1]=1

Export a Lab image:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-eoi8zv
Out[1]=1

Create a TIFF file from data representation elements:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-bxykpl
Out[1]=1

Create a multi-frame TIFF file from a list of RGB images:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-etmd6y
Out[1]=1

Create a multi-frame TIFF from a Manipulate:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-cl6l7a
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-d9qrq9
Out[2]=2

Read the number of exported frames:

In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-f8yi4g
Out[3]=3

Import Elements  (36)

Available Elements  (4)

List of available elements:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-1g2ndh
Out[1]=1

List of available Exif elements:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-mi3omu

List of available IPTC elements:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-g8cf3x

Get image-related information as list of rules:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-myzd73

Data Representation  (10)

"Animation"  (1)

Get the animation of the frames:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-ni2bu8
Out[1]=1

"Data"  (1)

Import the image data:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-bscsbj
Out[1]=1

Create an image from imported data:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-n493vs
Out[2]=2

"Graphics"  (1)

Import as a Graphics object:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-oxk5kn
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-oxk2tw
Out[2]=2

"Image"  (2)

Import the file as an Image object:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-7r43um
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-1f07e2
Out[2]=2

Importing as an "Image" gets only the first frame of a multi-frame file:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-c7fosx
Out[1]=1

"Image3D"  (1)

Multi-frame TIFF files with commensurate properties can get imported as an Image3D:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-qytb82
Out[1]=1

"ImageList"  (2)

Get the data as a list of Image objects:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-dhcq0v
Out[1]=1

This is the default import element for TIFF:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-fuijbd
Out[2]=2

Specify the frames to import:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-c1n8ix
Out[1]=1

"Thumbnail"  (1)

Import a thumbnail of an image:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-64tjsb
Out[1]=1

"ThumbnailList"  (1)

Import a list of thumbnails of a multi-framed image:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-u0sddy
Out[1]=1

Specify the thumbnail size:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-4myr9p
Out[2]=2

Metadata  (22)

"BitDepth"  (1)

Get the bit count for the representation of each color channel:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-v4dei0
Out[1]=1

"CameraTopOrientation"  (1)

Get the camera orientation at the capture time:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-2s8neb
Out[1]=1

"Channels"  (1)

Get the number of color channels used:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-oedubm
Out[1]=1

"ColorProfileData"  (1)

Get the embedded color profile, given as a ColorProfileData object:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-1xdwml
Out[1]=1

The color profile is stored in the ColorSpace option of the imported image:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-mpv214
Out[2]=2

"ColorSpace"  (1)

Get the color encoding used on export:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-wb968h
Out[1]=1

Use ImageColorSpace to get the color space of an imported image:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-ca8qqr
Out[2]=2

"DateTime"  (1)

Get the data and time that the image was captured:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-hz5at2
Out[1]=1

"Exif"  (3)

Get Exif metadata:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-f0526s
Out[1]=1

Extract an individual tag from the association:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-omm9zg
Out[1]=1

Individual Exif tags can also be imported directly:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-55ozsh
Out[2]=2

Some Exif tags are processed to give more detailed information:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-srkr1f
Out[1]=1

Compare with the raw "Orientation" tag:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-3h2d51
Out[2]=2

"GeoPosition"  (1)

Import an image geo position:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-5f28r0
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-mxztht
Out[2]=2

Use the image thumbnail as the marker:

In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-g2wkji
Out[3]=3

"GPSDateTime"  (1)

Get the image creation date and time registered by GPS:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-bvoj53
Out[1]=1

"ImageCount"  (1)

Get the number of frames in a multi-frame TIFF file:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-2osa64
Out[1]=1

"ImageEncoding"  (1)

Get the encoding of a TIFF image:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-zlxsv4
Out[1]=1

"IPTC"  (1)

Get IPTC metadata:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-bh8hmw
Out[1]=1

"MetaInformation"  (1)

Get all the metadata:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-b0ags9
Out[1]=1

"RasterSize"  (1)

Get the dimensions of the image stored in the file:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-ib2ng3
Out[1]=1

Using ImageDimensions on an imported image gives the same result:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-ms87qe
Out[2]=2

"RedEyeCorrection"  (1)

Whether a red-eye correction was performed:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-d0abc2
Out[1]=1

"RawExif"  (1)

Import unprocessed Exif metadata:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-mf9zrs

Extract one element:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-dj1jcj
Out[2]=2

Compare to the processed element:

In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-k1llg3
Out[3]=3

"RowsPerStrip"  (1)

Get the number of rows per strip:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-i1p8mo
Out[1]=1

"Summary"  (1)

Get the image summary:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-4is8p9
Out[1]=1

"SummarySlideView"  (1)

Get the image frames' summary:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-biw197
Out[1]=1

"XMP"  (1)

Get XMP metadata:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-eg38fx
Out[1]=1

Extract the XMP "DublinCoreSchema" metadata:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-k0ukx6
Out[2]=2

Import Options  (7)

ImageResolution  (1)

By default, the image resolution is extracted from the file:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-kux3uu
Out[1]=1

Specify the resolution of the imported image:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-f98eh7
Out[2]=2

Specify different resolutions in and directions:

In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-rc4e7v
Out[3]=3

"ImageTopOrientation"  (1)

By default, images are imported with the native orientation stored in the file:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-qpx1rr
Out[1]=1

Specify the side that is supposed to be on the top:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-f2hain
Out[2]=2

The correct orientation can also be achieved by rotating the image after import:

In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-y94tbh
Out[3]=3

IncludeMetaInformation  (3)

By default, all available metadata is imported:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-fdv13j

All imported classes of metadata:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-kz0w78
Out[2]=2

Import the image with no metadata:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-inmgwp
Out[1]=1

Import the image with Exif metadata only:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-fpx9h0

RasterSize  (1)

By default, images are imported in their full resolution:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-ty3hak
Out[1]=1

Specify the raster size of the imported JPEG image:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-df7mw1
Out[2]=2
In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-d5h5xu
Out[3]=3

Specify both width and height of the imported image:

In[4]:=4
✖
https://wolfram.com/xid/0qn747ak6-obfbkq
Out[4]=4
In[5]:=5
✖
https://wolfram.com/xid/0qn747ak6-ztsyua
Out[5]=5

"TakeRows"  (1)

By default, all rows are imported:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-8dhom
Out[1]=1

Import only the specified rows:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-ydwozh
Out[2]=2

Export Options  (12)

"BitDepth"  (2)

By default, the exported TIFF file has a bit depth of 16:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-2jzvj3
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-19ehwm
Out[2]=2

Specify a different bit depth:

In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-lcy12t
Out[3]=3
In[4]:=4
✖
https://wolfram.com/xid/0qn747ak6-pv5rhj
Out[4]=4

Export real valued lists to TIFF:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-48eaoj
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-fd9lqn
Out[2]=2

ColorSpace  (1)

By default, the native color space of the image is used for export:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-umqnom
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-cd7oot
Out[2]=2
In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-dky0tw
Out[3]=3

Export as a CMYK image:

In[4]:=4
✖
https://wolfram.com/xid/0qn747ak6-zxgis3
Out[4]=4
In[5]:=5
✖
https://wolfram.com/xid/0qn747ak6-6mo35w
Out[5]=5

CompressionLevel  (1)

By default, with some image encodings, an automatic compression level is used:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-0tbu4a
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-l4besk
Out[2]=2
In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-1j0scd
Out[3]=3

Specify the compression level:

In[4]:=4
✖
https://wolfram.com/xid/0qn747ak6-xaxuyg
Out[4]=4

Compare the file size for different compression levels:

In[5]:=5
✖
https://wolfram.com/xid/0qn747ak6-ljy6n8
Out[5]=5

"ControlAppearance"  (1)

Control the appearance of a multi-frame TIFF from a Manipulate:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-0j1ijb
Out[1]=1

By default, the controls are also included:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-khkz4l
Out[2]=2

Export without controls:

In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-8bfx2x
Out[3]=3

"ColorMapLength"  (1)

Decrease the file size by specifying a smaller length of a color map:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-y08sm
Out[1]=1

Dithering  (1)

Show the effect of dithering:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-4s7dh
Out[1]=1

Show the areas with significant difference:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-rr4osg
Out[2]=2

"ImageEncoding"  (1)

By default, the image encoding is "ZIP":

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-ytwvg4
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-nt1r5u
Out[2]=2

Specify a different encoding:

In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-l15lp
Out[3]=3
In[4]:=4
✖
https://wolfram.com/xid/0qn747ak6-titgo
Out[4]=4

"ImageTopOrientation"  (1)

By default, the upright image is exported using "ImageTopOrientation"->Top:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-kje3az
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-9ogv7d
Out[2]=2
In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-oj40fq
Out[3]=3

Specify the orientation:

In[4]:=4
✖
https://wolfram.com/xid/0qn747ak6-i70bei
Out[4]=4
In[5]:=5
✖
https://wolfram.com/xid/0qn747ak6-olrxst
Out[5]=5

Import using the original orientation:

In[6]:=6
✖
https://wolfram.com/xid/0qn747ak6-s4jg2y
Out[6]=6

IncludeMetaInformation  (1)

By default, all available metadata is exported:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-hbtrv0
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-d26knl
Out[2]=2
In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-kiahes

Specify the metadata to include:

In[4]:=4
✖
https://wolfram.com/xid/0qn747ak6-lyrps1
Out[4]=4
In[5]:=5
✖
https://wolfram.com/xid/0qn747ak6-7rv0o4

Export no metadata:

In[6]:=6
✖
https://wolfram.com/xid/0qn747ak6-yynblo
Out[6]=6

Some metadata may automatically get generated:

In[7]:=7
✖
https://wolfram.com/xid/0qn747ak6-keryjm

"QuantizationMethod"  (1)

Show the effect of various quantization methods:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-okhxm7
Out[1]=1

Show the areas with significant difference:

In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-fybk1x
Out[2]=2

RasterSize  (1)

By default, the image is exported in the full resolution:

In[1]:=1
✖
https://wolfram.com/xid/0qn747ak6-lszysm
In[2]:=2
✖
https://wolfram.com/xid/0qn747ak6-bhjnpf
Out[2]=2
In[3]:=3
✖
https://wolfram.com/xid/0qn747ak6-t9ntr8
Out[3]=3
In[4]:=4
✖
https://wolfram.com/xid/0qn747ak6-7p8hv4
Out[4]=4

Specify the raster size of the exported image:

In[5]:=5
✖
https://wolfram.com/xid/0qn747ak6-3ie1wu
Out[5]=5
In[6]:=6
✖
https://wolfram.com/xid/0qn747ak6-ss5jdi
Out[6]=6