A downloadable tool

Download NowName your own price

This page is download-only. The tool is not playable directly here on itch.io — some of its features (saving projects, exporting files) need to run outside itch's embedded frame to work reliably. Download the file below, or if you'd rather try it instantly in your browser without downloading anything, it's also live at Filemason

What's inside

2D Animator
-Grid mesh deformation — drag control points to bend a flat image like a soft puppet, with adjustable smoothing radius for organic motion (breathing, hair sway, cloth).
- Full keyframe timeline: copy/paste/drag keyframes, per-keyframe easing (Linear, Ease In/Out, Ease In-Out), onion skinning.
-Custom rotation/scale pivot per layer, layer merging, multi-select, undo/redo.
-Zoom and pan on the canvas, exactly like a real editor.

Spritesheet Tools
- Unpacker/Cut Tools: slice a spritesheet by grid (columns × rows, or exact pixel cell size) with auto gap-detection, or freehand-cut irregular sprites with a lasso tool.
- Pack: arrange loose images into a single spritesheet by hand — drag tiles, swap positions, snap to a max-width guide.
- Rescale: batch resize with nearest-neighbor (crisp pixel art) or smooth resampling.

Background Remover
- Magic wand (connected or global color similarity) plus a manual eraser/restore brush with a live brush-size cursor.
- Send the result straight into the Animator, the Unpacker, or Rescale.

Export
- PNG sequences, packed spritesheets, GIF (with transparency), MP4.
- Every tool with meaningful state (Animator, Pack, Unpacker, Rescale, Background Remover) can save/load its own session as a project file.

This is a single self-contained HTML file. Download it, open it in any modern browser (Chrome, Firefox, Edge), and you have a full 2D animation toolkit running entirely on your machine. Nothing is uploaded anywhere. Your images never leave your computer.

Also available online!

If you just want to try it without downloading anything: https://filemason.com



If this is useful to you, you can support development,  completely optional, the tool is free either way.


Feedback and bug reports welcome.

Download

Download NowName your own price

Click download now to get access to the following files:

filemason.html 192 kB
demo.mp4 245 kB
demobat.mp4 404 kB

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