Open-source Animation Production Software-to Develop and Create All Together

  • This is software for producing a 2D animation.

    It is based on the software “Toonz”, which was developed by Digital Video S.p.A. in Italy, customized by Studio Ghibli, and has been used for creating its works for many years. Dwango launches this OpenToonz project, in cooperation with Digital Video and Studio Ghibli.

  • This software can be used by anyone free of charge, no matter whether the purpose of use is commercial or not.
  • This is available as an open source, so that users can modify its source code freely.
  • We aim to develop a new platform for connecting the academic research into frontline animation production.

How it has been used in Studio Ghibli

Since the software “Toonz”, which is the original version of OpenToonz, was first used for some cuts of Princess Mononoke, it has been used in the ink and paint, color design and digital composition process(*) of almost all of works of Studio Ghibli. After “Arrietty/The Secret World of Arrietty”, it was customized inside the company, and evolved to become more usable according to its production style.

(*) The ink and paint, color design and digital composition: Processes from the scanning of hand-drawn pictures to the production of final footages

Open source, which can be used by anyone free of charge

The source code of OpenToonz can be modified freely, based on the license(*). It can be used by anyone free of charge, no matter whether the purpose of use is commercial or not. It can be used in all kinds of scenes, such as professional production, amateur production, and school education.

(*) For further information on the license of the software (installer), see the rules of use of OpenToonz. Its source code is available under the terms of the New BSD License.

Functions to meet on-site needs

OpenToonz is equipped with the unique functions that have been improved repeatedly based on the opinions of production staff, including the scanning tool “GTS” specializing in animation, which was developed in Studio Ghibli. For details, see “Introduction of the functions unique to OpenToonz” written below.

Effect development kit (SDK)

Dwango newly developed SDK, a plug-in effect for image processing for OpenToonz. By using SDK, anyone can add effects to OpenToonz. Video expression researchers can receive swift feedback from on-site workers, by developing and releasing their outcomes as plug-in effects.

By using the plug-in effect SDK, the effects developed by Dwango’s machine leaning research and development team are released. They include the effect of automatically changing picture styles by applying the deep learning technology and the effect of producing affected incident light like those in classic works before the digitization of the production environment.

Please download OpenToonz, GTS, or effects via PC browser.

※ GTS is available for Windows only

Please tell me the recommended PC environment.

The requirements for using OpenToonz comfortably are as follows:


  • Microsoft Windows 7 SP1/8.1/10 (64bit required)
  • Intel Core i series processor
  • 4GB or more RAM
  • 500 MB or more available storage space
  • 1280 x 1024 or higher monitor resolution


  • OS X 10.9 or a later version
  • Intel Core i series processor
  • 4 GB or more RAM
  • 500 MB or more available storage space
  • 1280 x 1024 or higher monitor resolution

The requirements for using GTS comfortably are as follows:

  • Microsoft Windows 7/8.1/10
  • Intel Core i series processor
  • 2 GB or more RAM
  • 8 MB or more available storage space
  • Scanner compatible with the TWAIN standard (including the driver software)
    ※EPSON DS-50000 is recommended.
If I find a defect or have a trouble, what should I do?
OpenToonz has a Google group, to provide a place where users can solve troubles. Join the group to request functional improvements, report bugs, and have discussions with other users.
In addition, there is a forum for developers and video researchers in GitHub. Please offer development-related topics here.
Can I interview you?

Thank you very much for having interests in OpenToonz. If you want to interview us, please contact the following.

This address is exclusively for inquiries from the media. We will not respond to inquiries from anyone other than media staff. We would appreciate your understanding.

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