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Aseprite

DESIGN
Velocity5.0

Animated sprite editor and pixel art tool

aseprite.org ↗

Aseprite 1.3.18.x stabilizes tilemap editing and macOS performance after a major release

pixel-artopen-sourcegame-dev-toolstilemap-editingindie-dev
◆Current state
Aseprite is in a maintenance phase following the 1.3.18 release, addressing bugs and edge cases concentrated in tilemap operations, macOS performance (slowing over time), Linux X11 behavior, and Lua API reliability. Multiple patch releases addressed tilemap copy/paste across layers — a feature that shipped in 1.3.18 but needed several iterations to cover all edge cases. The project ships on a tight patch cadence for a solo-team pixel art editor.
◆Where it's heading
The 1.3.18 series added Preferences search, faster undo/redo, Lua eyedropper support, and a custom file format API — the current patch cycle is stabilizing those additions. Architecture refactors in 1.3.18 for new layer types haven't yet surfaced as user-facing capabilities; that work is foundation for a future release. The .psd custom format support (via extension API) in 1.3.18.4 hints at an expanding extension ecosystem.
◆Prediction
v1.3.19 will introduce new layer type functionality — the architecture changes in 1.3.18 are explicitly described as foundation work for new layer types that haven't shipped yet.

◆Recent moves

  1. 1mo ago

    Aseprite v1.3.18.6

    1.3.18.6 fixes a crash in tilemap paste introduced by 1.3.18.4 and refines the copy/paste behavior across layers and sprites. The Sprite Sheet JSON fix for user data line breaks and Linux X11 resize improvements are secondary quality fixes. This patch closes the most visible tilemap regression in the recent release cycle.

    View source ↗
  2. 1mo ago

    Aseprite 1.3.18.5: Export Sprite Sheet crash fix

    Single crash fix for the Export Sprite Sheet path introduced in 1.3.18.4 — a targeted hotfix release.

    View source ↗
  3. 1mo ago

    Aseprite v1.3.18.4

    1.3.18.4 fixes Snap to Grid for brushes larger than 1px, resolves long-standing tilemap copy/paste issues across layers (issues dating to 2022), and adds .psd as a registerable custom format via the extension API. The tilemap fixes are the most impactful — a feature that shipped rough and required a follow-up patch in 1.3.18.6 too.

    View source ↗
  4. 2mo ago

    Aseprite v1.3.18.3

    1.3.18.3 patches a macOS-specific performance regression (application slowing over time), a macOS brush stroke corruption after undo, and a Linux eyedropper crash. The .aseprite decoder improvements for tileset ID reading add robustness for complex sprite files.

    View source ↗
  5. 2mo ago

    Aseprite v1.3.18.2: uninitialized MoveThings params fix

    Single memory safety fix preventing uninitialized parameter use in MoveThings — a correctness patch with no user-visible impact.

    View source ↗
  6. 3mo ago

    Aseprite v1.3.18.1

    1.3.18.1 addresses three crash scenarios (timeline tag mouse-hover, backup save, missing theme layout selector) and fixes GIF export version handling for multi-frame sprites. Pure stability work following the 1.3.18 feature release.

    View source ↗