A free, single-file animation editor that runs in your browser. Draw vectors, lay them out on a timeline, tween between keyframes, and export video, GIF, SVG or a standalone HTML player. Nothing is uploaded anywhere; your work stays in your browser until you save it.
Onionskyn is an independent project and is not affiliated with Adobe.
The app is a single HTML file built from the files in source/src/. From the source/ folder, run bash build.sh to produce dist/onionskyn.html, and npm test to run the regression suites. See Building from source for the layout and the tests.
Use File → Report a problem… in the app, describe what happened, and choose Email report. It opens your email app addressed to [email protected] with technical details attached. If no email app opens, use Copy report and paste it into an email yourself.
Onionskyn is released under the MIT License. Copyright (c) 2026 Dylan Papp. It includes JSZip and pako, also MIT; see THIRD-PARTY.md.
A free, single-file animation editor that runs in your browser. Draw vectors, lay them out on a timeline, tween between keyframes, and export video, GIF, SVG or a standalone HTML player. Nothing is uploaded anywhere; your work stays in your browser until you save it.
Onionskyn is an independent project and is not affiliated with Adobe.
The app is a single HTML file built from the files in source/src/. From the source/ folder, run bash build.sh to produce dist/onionskyn.html, and npm test to run the regression suites. See Building from source for the layout and the tests.
Use File → Report a problem… in the app, describe what happened, and choose Email report. It opens your email app addressed to [email protected] with technical details attached. If no email app opens, use Copy report and paste it into an email yourself.
Onionskyn is released under the MIT License. Copyright (c) 2026 Dylan Papp. It includes JSZip and pako, also MIT; see THIRD-PARTY.md.
