Export

Spine project files can also be exported using the command line interface.

Spine can export a single image, sequence of images, video, and JSON or binary data.

To open the export dialog, choose Export from the main menu or press ctrl+E (cmd+E on Mac).

To repeat the last export, press ctrl+shift+E (cmd+shift+E on Mac).

Data

Spine can export skeleton data as JSON or binary. This data can then be loaded by our Spine Runtimes and displayed in your applications just as it is in Spine.

For these reasons it is recommended to write scripts that automate exporting all of your Spine projects using the command line interface.

Data export transforms the data in the Spine project file to a format that can be read by the Spine Runtimes. The version of the Spine editor used to export must match the version of the Spine Runtimes. When the Spine Runtimes are updated to a newer version, the data must be exported from the Spine project file again. For this reason it is important to keep your Spine project files safe. See versioning for more information.

Data export creates a data file for each skeleton in the project. It is not possible to export only a single skeleton, only part of a skeleton, or individual animations.

JSON

If the size of the data file is important, use binary.

If the speed the data file is loaded at runtime is important, use binary.

JSON data is much larger than binary and loading JSON data is much slower, so generally using binary data in your applications is preferred. However, JSON is human readable and it is easy to write tools to parse and manipulate the data, if needed.

It is perfectly reasonable to export to JSON, process the JSON data, then import the data back into a Spine project. When doing so, be sure that Nonessential data is checked.

See JSON format for more information.

SettingDescription
Output folder

A JSON file will be created in this folder for each skeleton in your project. The name of the file will use the name of the skeleton.

Extension

The JSON files will use this file extension.

Format

Spine can optionally write in JSON-like formats that are slightly smaller, easier to read, and easier to edit.

  • JSON Standard JSON.
  • JavaScript Like JSON, but names are only quoted if necessary. The data is valid JavaScript.
  • Minimal Like JSON, but most names and values are not quoted. This format requires a lenient JSON parser, such as the one in libgdx.

Pretty print

When checked, the JSON is formatted to be more easily read by humans. This makes the file slightly larger.

Version

If an older JSON version is chosen, Spine attempts to write data compatible with that older version of the Spine Runtimes. In many cases this is not possible, data will be lost, and warnings will be shown.

Exporting to older versions is intended only as a last resort to partially recover work when a project was accidentally saved with a newer version of Spine. See recovering work for more information.

Nonessential data

When checked, additional data is included in the JSON that is not usually needed at runtime. This makes the file slightly larger. This data is used if the JSON is imported back into Spine. See import for more information.

Animation clean up

When checked, animation clean up is performed for the exported data. This does not modify the project file.

Warnings

When checked, Spine will show any warning messages after exporting.

Pack

When checked, a texture atlas is packed during the data export. See packing during data export for more information.

Binary

Binary data is much smaller than JSON and it is very fast to parse at runtime. However, it is not human readable and it is not easy to write tools to parse and manipulate the data.

See binary format for more information.

SettingDescription
Output folder

A binary file will be created in this folder for each skeleton in your project. The name of the file will use the name of the skeleton.

Extension

The binary files will use this file extension.

Nonessential data

When checked, additional data is included in the JSON that is not usually needed at runtime. This makes the file slightly larger. This data is used if the JSON is imported back into Spine. See import for more information.

Animation clean up

When checked, animation clean up is performed for the exported data. This does not modify the project file.

Warnings

When checked, Spine will show any warning messages after exporting.

Pack

When checked, a texture atlas is packed during the data export. See packing during data export for more information.

Images

GIF

Spine can export animated GIFs, making it easy to share animations on the internet. GIF is an image format with only 256 colors, so some loss of quality may occur. GIF also doesn't support translucency, so pixels can only be either opaque or transparent.

Spine's GIF export is very sophisticated and produces the highest quality GIFs that are possible, but does not prioritize for a small file size.

See common settings.

SettingDescription
Colors

The maximum number of colors in the GIF.

Color dither

The amount of dither to apply to the GIF colors. Dither disperses the colors to prevent hard edges in gradients.

Alpha threshold

Alpha values below this value are treated as 0.

Alpha dither

The amount of dither to apply to the GIF transparency. Dither disperses transparency to prevent hard edges. The type of dispersion and how the alpha range is used can be chosen for the best results.

Background

The background color to use.

Transparent

When checked, completely transparent pixels will be transparent instead of the background color. When unchecked, the specified color is used for the background of the GIF.

Matte

Translucent pixels are made opaque using the matte color.

Quality

Higher quality produces better colors but takes longer to export.

FPS

The number of frames per second for the GIF animation. 50 generally provides the best results.

Forever

When checked, the animation is looped continuously.

Include last frame

When unchecked, the last frame of each animation is omitted. Unchecking this is useful for looping animations where the first and last frame are identical -- the same frame would be exported twice when this setting is checked.

PNG

Spine can export PNG image files. PNG is a lossless image format that supports transparency, so no loss of quality will occur.

See common settings.

SettingDescription
Background

The background color to use.

Compression

Higher compression produces smaller files but takes longer to export.

FPS

The number of frames per second for the PNG sequence.

Include last frame

When unchecked, the last frame of each animation is omitted. Unchecking this is useful for looping animations where the first and last frame are identical -- the same frame would be exported twice when this setting is checked.

Pack

When checked, the exported images are packed into a texture atlas. This is convenient but running the texture packer separately provides more control over the packing. See texture packing for more information.

APNG

Spine can export APNG image files. APNG is a lossless animated image format that supports transparency, so no loss of quality will occur. It is supported by most modern browsers and has much higher quality than GIF, but the file size is usually larger.

See common settings.

SettingDescription
Background

The background color to use.

Transparent

When checked, the background of the APNG is set to transparent.

Compression

Higher compression produces smaller files but takes longer to export.

FPS

The number of frames per second for the PNG sequence.

Forever

When checked, the animation is looped continuously.

Include last frame

When unchecked, the last frame of each animation is omitted. Unchecking this is useful for looping animations where the first and last frame are identical -- the same frame would be exported twice when this setting is checked.

PSD

It can be very useful to export the current pose in the middle of an animation as layers in a PSD so you can more easily redraw attachment images for that pose.

Spine can export Adobe Photoshop PSD image files. A layer for each animation frame will be created inside the PSD file.

See common settings.

SettingDescription
Background

The background color to use.

Transparent

When checked, the background of the images within the PSD is set to transparent.

Encoding

The type of compression to use to create the PSD.

  • RAW An uncompressed format. Encoding is fast but the exported PSD is very large.
  • RLE Encoding is fast and the exported PSD is small.
  • ZLIB Encoding is slow and the exported PSD is very small.

FPS

The number of frames per second for the PSD image sequence.

Include last frame

When unchecked, the last frame of each animation is omitted. Unchecking this is useful for looping animations where the first and last frame are identical -- the same frame would be exported twice when this setting is checked.

JPEG

Spine can export JPEG images. JPEG is a lossy image format that does not support transparency, so some loss of quality may occur depending on the specified quality.

See common settings.

SettingDescription
Background

The background color to use.

Quality

Higher quality produces better images but the file sizes are larger.

FPS

The number of frames per second for the JPEG sequence.

Include last frame

When unchecked, the last frame of each animation is omitted. Unchecking this is useful for looping animations where the first and last frame are identical -- the same frame would be exported twice when this setting is checked.

Video

AVI

Please note that video playback support varies for different resolutions and encodings. Some video playback software is unable to play some video files, while other software can play them just fine.

Spine can export AVI video files. The RAW and PNG encodings for AVI files support transparency, which can be a convenient way to bring Spine animation into other software using a single file.

See common settings.

SettingDescription
Encoding

The codec to use to encode the AVI video.

Background

The background color to use.

Compression

Higher compression produces smaller files but takes longer to export.

Quality

For the JPEG-based codec, higher quality produces better images but the file sizes are larger.

FPS

The number of frames per second for the AVI video.

Forever

When checked, the animation is looped continuously.

Include last frame

When unchecked, the last frame of each animation is omitted. Unchecking this is useful for looping animations where the first and last frame are identical -- the same frame would be exported twice when this setting is checked.

MOV

Please note that video playback support varies for different resolutions and encodings. Some video playback software is unable to play some video files, while other software can play them just fine.

Spine can export QuickTime MOV video files. The RAW and PNG encodings for MOV files support transparency, which can be a convenient way to bring Spine animation into other software using a single file.

See common settings.

SettingDescription
Encoding

The codec to use to encode the MOV video.

Background

The background color to use.

Transparent

When checked, the background of the MOV video is set to transparent.

Compression

Higher compression produces smaller files but takes longer to export.

Quality

For the JPEG-based encoding, higher quality produces better images but the file sizes are larger.

FPS

The number of frames per second for the MOV video.

Forever

When checked, the animation is looped continuously.

Include last frame

When unchecked, the last frame of each animation is omitted. Unchecking this is useful for looping animations where the first and last frame are identical -- the same frame would be exported twice when this setting is checked.

Common settings

Most image and video exports have these settings. See the specific export section for other export settings.

SettingDescription
Defaults

Resets all the export settings to the defaults.

Preview

Opens the preview panel for the export dialog.

Export type

Either animations or the current skeleton pose are exported.

Skeletons

All skeletons are rendered together in the same export, in separate exports, or only the chosen skeleton is exported.

Animations

The current animation, all the animations, or the chosen animation is exported.

Skins

The currently visible skins, all the skins, or all skins plus the skeleton without any skin active are exported.

Output type

Either creates a single file, a file per frame, a file per animation, a single file with multiple layers, or a single file with one frame.

Output file

The file to write (when a single file is exported).

Output folder

The folder where files will be written, including the beginning of the file name for each file (when multiple files are exported).

Output prefix

The folder where files will be written (when multiple files are exported).

Maximum bounds

When checked, each exported file will have the same dimensions.

Animation repeat

The number of times to play each animation.

Pause after

The number of seconds to pause after playing each animation.

Bones

When checked, skeleton bones will be rendered.

Images

When checked, skeleton mesh and region attachments will be rendered.

Others

When checked, other skeleton attachments will be rendered.

Smoothing

Controls how much smoothing is applied to the image.

Multisample AA

The number of samples for multisample anti-aliasing (MSAA). See hull edges.

Crop

When checked, the specified bounds are exported rather than using the skeleton's bounds. The first two numbers are X and Y world coordinates. The next two numbers are the width and height of the area to export. When enabled, the bounds can be adjusted by dragging the orange corners in the preview panel.

Size

The type of resizing to perform.

Scale

The relative scale of the image as a percentage.

Fit

When selected, the output image will fit within the specified pixel values.

Enlarge

When checked and the image is smaller than the specified size, the image is proportionally stretched until one of the sides matches the specified size.

Pad

When checked, additional space is added to the image to match the specified size.

Range

When checked, only the specified range of frames will be exported.

Preview panel

The preview panel shows a preview of the export.

The frame slider and arrows at the bottom allow choosing the frame to preview. These frames may not correspond to the frames shown on the timeline in the Spine editor, as they depend on the FPS specified in the export settings.

A white box shows the bounds of the export. When Crop is checked, the bounds have orange corners that can be dragged and the box can be dragged to set the bounds for cropping.

The dimensions of the frame are shown in pixels along with an estimated file size for the export.

Disabling export

Skeletons, animations, attachments, and skins have an Export property that can be unchecked to exclude them from exports. For example, this is useful to use a skeleton or attachment as a background or animation reference.

To do so, select a skeleton, skin, or attachment in the tree, then uncheck Export in the properties at the bottom of the tre.

If an attachment is not exported but it is keyed in animations, the keys will not be exported. If a mesh is not exported, any linked meshes will also not be exported.

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