Aseprite v1.3.15.3 & v1.3.16-beta1 Sep 23, 2025

Hi pixel lovers! Today we’ve released Aseprite v1.3.15.3 including some fixes and v1.3.16-beta1 with a few nice features.

Remember, beta versions are available only through Steam.

What’s new

Aseprite v1.3.16.beta1 (art by DrSmey)

Added “Run Command” window (press Ctrl+Space to try it!) #5393 featuring:
- Aseprite’s command search
- Input of math expressions
- Inline Lua script evaluation
Added UI customization by making all elements on screen dockable/movable/resizable #518 #3485
Lua API:
- Added ‘ui’ parameter to all commands for enabling/disabling user interaction through their dialogs #3025

Aseprite v1.3.15.3

Fix UI theme colors to match theme color space commit c444b56
Context matching and prioritization using keyboard shortcuts #5390
Fixed Color Management issues (t/15751), (t/21945)
Lua API:
- [lua] Update scripting API version to 36
- [lua] Enclose key names for plugin preferences with [“…”] when it’s required #5412

Aseprite v1.3.15.4 & v1.3.16-beta2

Fixed random crashes applying filters (Replace Color, Outline, etc.) #4991
Fixed crash with certain scripts pasting images with an empty selection #5361
Fixed crash dropping certain images #5447https://github.com/aseprite/aseprite/issues/4388
Fixed mouse gestures not working after switching tabs #4388 (thanks to @JoshuaL03)

Aseprite v1.3.15.5

Added Ignore empty frames toggle to File > Export > Export As #5452 (thanks to @JoshuaL03)
Improved rotated rectangles and square brushes #5459
Fixed small graphical bug when dragging cels #5216
Fixed creating a copy rotating selection (CW/CCW) when we associate these commands with a shortcut including Ctrl modifier #1330 (thanks to @JoshuaL03)
Fixed export file window not starting out centered #5480
Fixed some Brush Preview visual traces when canvas is zoomed out #5005
Fixed Move tool with Auto Select Layer when the composition of groups is enabled #4812
Steam: -batch arg should have the same effect as -noinapp #5482
macOS: Fixed thumbnails for macOS Sequoia #5009
Windows: Fixed regression pasting DIB bitmaps from old Windows programs, e.g. Photoshop v7.0 #5458
Windows: Added compatibility to paste 1bpp and 4bpp bitmaps from clipboard
Lua API:
- Update API version to 37
- Avoid setting window bounds when the app is closing #5384
- Fixed centering a dialog with autoscrollbars behavior #5485
- WebSocket: Added error param to onreceive handler
- Fixed app.clipboard.content.selection property

Aseprite v1.3.16-beta3

Windows: Added IME support on text fields #1767 #2841 (thanks to @Cerallin)
Windows: New external process to show Open/Save File dialog, in case of crash the dialog is restarted without crashing Aseprite. This is the most common crash at the moment on Windows #4412