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Code of Conduct

We have a code of conduct that we all must read. Be polite to everyone. If you are not in your best day, take a deep breath and try again. Smile ^_^

New Issues

Before you submit an issue:

  • Search in the current list of issues.
  • If the issue already exists, add a +1, and you can click the Subscribe button to get notifications via email.

Compilation problem

Before you submit an issue about a compilation problem, check the following items:

  • See how to get the source code correctly in the INSTALL guide.
  • Check if you are using the latest repository clone.
  • Remember that we use submodules, so you need to initialize and update them.
  • Remember that might be some pull requests being reviewed to fix your same problem.
  • If you are compiling on Mac OS X or on Linux, be patient, we don't compile on those platforms regularly.


One of the easiest ways to contribute is writting articles, blog posts, recording video tutorials, creating pixel art, or showing your love to Aseprite e.g. naming Aseprite in your website and linking it to, following @aseprite twitter account, or giving a donation.

Other ways to contribute require direct contact with us. For example:

  • Writting documentation.
  • Making art with Aseprite and for Aseprite (logos, skins, mockups).
  • Sending patches for features or bug fixes.
  • Reviewing issues in the issue tracker and making comments.


You can start seeing the documentation, and contact us if you want to help writting documentation or recording tutorials.

If you are going to write documentation, we recommend you to take screenshots or record a GIF animations to show steps:

  • As screen recording software, on Windows you can generate GIF files using LICEcap.
  • You can upload the PNG/GIF images to Imgur.

Reviewing Issues

You can review issues, make comments, or create new ones (features, bug reports, etc.) in the issue tracker. You are encouraged to create mockups for any issue you see and attach them.


The first thing to keep in mind if you want to modify the source code: checkout the master branch. It is the branch that we use to develop new features and fix issues that are planned for the next big release. See the INSTALL guide to know how to compile.

To start looking the source code, see how it is organized in src/ file.

Forking & Pull Requests

You can fork the GitHub repository using the Fork button at

The Pull Requests (PR) systems works in this way:

  1. First of all you will need to sign our Contributor License Agreement (CLA).
  2. Then you can start working on Aseprite. Create a new branch from master, e.g. fix-8 to fix the issue 8.
  3. Start working on that new branch, and push your commits to your fork.
  4. Create a new PR to merge your fix-8 branch to the official master.
  5. If the PR is accepted (does not require review/comments/modifications), your branch is merged into master.
  6. You will need to pull changes from the official master branch, and merge them in your own master branch. Finally you can discard your own fix-8 branch (because those changes should be already merged into master if the PR was accepted).
  7. Continue working from the new master head.

To keep in mind: always start working from the master head, if you want to fix three different issues, create three different branches from master and then send three different PR. Do not chain all the fixes in one single branch. E.g. fix-issues-3-and-8-and-25.

Mailing List

Subscribe to aseprite-discuss group. If you want to start working in something (e.g. an open issue), you should send an email to the group describing what you want to do, to avoid programming in something that is already done or which someone else is working on.

And always remember to take a look at our roadmap.