Photoshop plugin

 

 

Photoshop plugin

KPT Spheroid Designer 3.0

Photoshop plugins (or plug-ins) are add-on programs aimed at providing additional image effects or performing tasks that are impossible or hard to fulfill using Adobe Photoshop alone. Plugins can be opened from within Photoshop and several other image editing programs (compatible with the appropriate Adobe specifications) and act like mini-editors that modify the image.ps.

Plugin types

Photoshop-compatible plugins fall into several main types: filter plugins .8bf, import plugins (also
called 'acquisition') .8ba, export plugins .8be, file format plugins .8bi, and automation plugins .8ly.
Also, there are selection plugins 8bs and parser plugins 8by, but no one other than Adobe has ever
created plugins of these types.^[1]
"Import/export plugins" acquire or write image data from or to certain devices, "file format plugins"
open and save less common image formats (not inherently supported by Photoshop), and"automation
plugins" automate certain tasks in the manner of Photoshop "actions"^[2] (macros).

Host applications

Host applications or plugin hosts are graphics applications that are capable of running plugins. Many
commercial graphics applications support Photoshop-compatible plugins — Photoshop, Paint Shop 
Pro,^[3] Photoshop Elements, PhotoImpact, Corel PhotoPaint, and Adobe Fireworks are the most
renowned ones. There are several dozens more plugin hosts, including little known products like
Chasys Draw IES, free editors like GIMP (with certain add-ons) and viewers like IrfanView.^[4] Much
support is limited to the Microsoft Windows platform and .8bf filter plugins.

          Photoshop fully supports all available plugin types; certain hosts, like Photoshop Elements, support most of them, while the majority of hosts support filter plugins only and many of them don't even support all available filter plugins.

          The support for plugins was more uniform up until 2002, when Adobe restricted access to the
Photoshop SDK containing the specifications for Photoshop plugins, and made the developer license more prohibitive. Since then, developers of other image applications have had limited or no access to it anymore, so they can't support newer host features.

          Therefore, plugin developers face a dilemma: either support the new host features that
appeared in Photoshop 7 and later versions, like the access to layers, and lose the compatibility with
other image applications, or use the old SDK version which already includes all important
specifications and make sure the plugin will be supported by all hosts.^[1]

          Around 2005, Adobe changed the policy so that developers could make the request for the
SDK via a Web form with no fee charged for it and with all requests handled individually.^[5]


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