Auto-island detection and bottom-center alignment
Detects the visible bounds of each sprite, trims transparent dead space, and aligns frames to the bottom-center anchor so characters sit consistently in the final sheet.
SpriteFix
SpriteFix cleans up sprite sheets for game developers, aligning frames, normalizing layouts, and repacking assets into engine-ready output.
Overview
SpriteFix is a web-based sprite sheet fixer for game developers who need to clean up messy animations and turn them into engine-ready output. It standardizes frame sizing, aligns sprites to a bottom-center anchor, and repacks assets into clean strips, grids, or ZIP archives.
The product is built for workflows that start with rough texture atlases, mixed-size frame folders, or uneven sprite sheets. Its workspace supports automatic island detection, strict grid slicing, live previewing, and reprocessing so users can inspect the result before downloading.
Key features
Batch frame packing
Takes folders of separate frame images and packs them into a single animation sheet while keeping frame order intact.
Universal format conversion
Converts between dense grids, horizontal strips, and ZIP archives of individual PNG frames so the same source can be reformatted for different engines.
Live animation preview
Lets you preview the processed animation in the browser before downloading, so you can check alignment and frame order without re-uploading.
Standardized output rules
Supports strict output sizing and frame-count controls such as power-of-two dimensions and fixed frame counts for predictable slicing.
Strict grid slicing
Provides strict grid slicing for sheets that cannot be separated by transparency alone, which is useful when frames touch or overlap.
Common use cases
Normalize legacy or hand-assembled sprites
Convert uneven or messy sprite sheets into clean, uniformly aligned outputs that are ready for engine import.
Pack frame sequences into one sheet
Upload a folder of individual frames and turn it into a single ordered sprite sheet without manual compositing in Photoshop or GIMP.
Adapt assets between game engines
Reformat sprite data for a different engine by changing between rows, grids, and ZIP exports as needed.
Check animation quality before download
Preview playback in the browser before export to confirm frame order, alignment, and whether the animation sits correctly on the ground plane.
Handle tightly packed sheets
Slice sheets that contain touching or overlapping frames using strict grid rules when transparent-space detection is not enough.
Pros and Cons
Pros
- Covers several common sprite inputs, including messy atlases, strips, grids, and batches of individual frames.
- Normalizes frame bounds and bottom-aligns sprites to reduce manual cleanup.
- Offers live in-browser previewing before export.
- Supports multiple output forms, including clean rows, grids, and ZIP archives on Pro.
- Uses one-time pricing rather than recurring subscriptions.
Cons
- Extremely dense animations may occasionally merge repeated cycles into one frame.
- Some advanced output options, such as grid output, strict grid slicing, and ZIP frame exports, are reserved for Pro.
FAQ
What does SpriteFix do?
SpriteFix automatically standardizes sprite sheets by detecting sprite bounds, aligning frames to the bottom-center, normalizing dimensions, and repacking the result into clean rows or grids. It can also export individual frames as ZIP archives on the Pro plan.
What file formats and sizes are supported?
SpriteFix accepts PNG, JPEG, and WebP files with RGBA channels. Free and Basic plans allow up to 10 files and 2.5MB total per batch, while Pro allows up to 100 files and 4.5MB total per batch, with each file up to 4096×4096 pixels.
Is SpriteFix free to use?
Yes. The free tier allows watermarked exports for testing. A one-time Basic upgrade removes the watermark for clean downloads, and Pro adds larger batching, grid output, strict grid slicing, and ZIP frame exports.
Which game engines are compatible with SpriteFix exports?
SpriteFix exports standard sprite sheets and, on Pro, ZIPs of individual frames. The site says these outputs are compatible with major engines including Unity, Godot, Unreal Engine, GameMaker, and Cocos2d-x.
Does SpriteFix separate every frame perfectly in dense animations?
For most sheets, yes. The site notes one limitation for extremely dense sequences where the same attack or VFX repeats many times with very little gap: some repetitions may be merged into one frame, and full per-cycle separation is on the roadmap.
Quick Facts
- Category
- Developer Tool
- Product type
- Web app for sprite sheet cleanup
- Primary users
- Game developers
- Input formats
- PNG, JPEG, WebP
- Source domain
- spritefix.kaushikdev.com
- Pricing model
- One-time payment with a free tier
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