Spritesheet vs Piskel
Piskel is a free online pixel art editor with spritesheet export. Spritesheet Generator picks up where that export stops: multi-source import, splitting, and the atlas formats engines actually read.
Both free and browser-based - but built for different jobs
Piskel is a good drawing tool and the sections below say so plainly. The difference shows up at the export end: assembling spritesheets from several sources, cutting an existing sheet apart, and writing the atlas file your engine wants. If the drawing is done and packing is what is left, that is this.
Piskel is a drawing tool that can export a sheet
Piskel is open source, has been free since it launched, and is still the fastest way to open a tab and start drawing an animated sprite. Frame timeline, layers, onion skinning, live animation preview in the corner, a real-time colour palette. For learning pixel animation there is very little that beats it, and its export does produce a usable PNG sheet plus a GIF.
It is worth correcting a claim these comparison pages often get wrong: Piskel can import images. Import from an image file, tell it the frame size, and it slices a sheet into frames. So splitting is not something only one of these tools can do. What differs is what happens next.
The honest weak point is maintenance. Piskel has had no significant release in years and its GitHub repository has been quiet for a long time. It still runs, and being a static browser app it will keep running, but nothing new is arriving and the export options are frozen where they were.
Where the two diverge: the export end
Piskel writes a PNG sheet, a GIF, a ZIP of frames, and its own .piskel project file. That is the list. No JSON atlas, which means an engine that reads frame data has to slice by grid or you write the data file yourself.
What this writes that Piskel does not
- A TexturePacker-format JSON atlas for Phaser and PixiJS.
- A real SpriteFrames .tres for Godot 4 that drops onto an AnimatedSprite2D with regions already set.
- A .tsj tileset for Tiled.
- Sparrow XML for FNF mods and Starling.
- CSS sprite output for web work.
Those are the formats that turn an exported image into something an engine reads without a manual step.
Layout control is the other difference. Columns, cell size, per-sprite offsets inside a cell, padding, force-size, and MaxRects packing when you want tight rather than gridded. Piskel exports the grid its canvas implies, which is the right call for a drawing tool and a limitation once the engine wants something specific.
Neither one replaces the other
Both are free and both run in a browser, so there is no cost to using both. Draw the frames in Piskel, export them as individual PNGs, drop them here, and export the format your engine actually wants.
If Piskel already exports a grid PNG your engine slices happily, you do not need a second step. Add one only when the export format is the thing standing in your way.
Pick Piskel when
You are drawing frames from scratch and want the simplest possible canvas, timeline, and onion skin. Its export is enough when your engine slices a plain grid.
Pick Spritesheet Generator when
Your frames already exist, they came from several sources, or your engine wants a JSON atlas, a Godot .tres, a Tiled tileset, or Sparrow XML that Piskel does not write.
| Feature | UsUs | Piskel |
|---|---|---|
| Free to use | ||
| Works in the browser | ||
| Drag & drop sprite upload Piskel imports images through its Import dialog | ||
| Auto grid layout | ||
| PNG export | ||
| JSON atlas export | ||
| GIF export | ||
| ZIP export | ||
| Engine-specific formats Unity, Godot, Phaser, Tiled | ||
| Built-in pixel art editor | ||
| Spritesheet splitting Both slice a sheet by frame size | ||
| Animation preview | ||
| Multi-layer support | ||
| Animated GIF frame extraction Drop a GIF, get every frame | ||
| Onion skinning | ||
| No account required |
Multi-source import
Drag in PNGs, JPGs, and folders from any editor at once. Animated GIFs are split into frames automatically on drop.
Splitter with a preview
Drop a finished sheet, see the cut lines before committing, and adjust rows, columns, or cell size until the frames land right.
Richer export options
Export as JSON atlas, ZIP, or engine-specific formats for Unity, Godot, Phaser, and Tiled - beyond what Piskel offers.
Layout control
Full control over columns, cell size, spacing, and per-sprite offsets. Build exactly the layout your game engine expects.
From Piskel to a packed sheet
- 1
Export frames, not the sheet
In Piskel choose the PNG export and take the individual frames rather than the assembled strip. Loose frames give the packer room to lay them out for your engine instead of inheriting the canvas grid.
- 2
Drop the folder in
Drag every frame onto the canvas here. Selection order becomes frame order, so pad the file numbers first if Piskel wrote frame1 through frame12 rather than frame01 upward.
- 3
Set the layout your engine wants
Column count, cell size, and padding. A grid for Unity or GameMaker, tight MaxRects packing when the loader reads an atlas and does not care about cells.
- 4
Export the data file
JSON atlas, Godot .tres, Tiled .tsj, Sparrow XML, or CSS. This is the step Piskel has no equivalent for, and the reason to add a second tool at all.
- 5
Keep drawing where you like
Nothing here replaces the Piskel canvas. Round trip freely: draw a fix there, re-import the frame, re-export the atlas.
More questions? See the full FAQ.
Take it past the PNG
Import your Piskel frames and export the atlas format your engine reads.