← Green Candle CupFree Game Dev Tool
Green Candle Sprite Doctor

Free Sprite Sheet Checker & Fixer

Check if your sprite sheet is game-ready. Sprite Doctor detects frame alignment issues, ground-anchor drift, empty cells, clipping risks and other common sprite sheet problems. Safe fixes can be applied directly in your browser and verified before export. Your files stay on your device — no upload, no account required.
Free · Local in Browser
1ConfigureChoose asset type and grid.
2Doctor ScanRun all proven diagnostics.
3Repair & VerifyApply only high-confidence safe fixes.
4ExportUnlock repaired PNG only after verification.
Each row is treated as one animation. Empty cells are ignored automatically.
No file selected
Scan complete
0
Safe Fixes
0
Review Only
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Technical Risks
✓ Safe fix = verified auto-repairⓘ Review only = never auto-changed! Technical risk = affects readiness
Game Readiness
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out of 100

Repair report

Doctor Scan results are ready to export as a JSON report.

What does Sprite Doctor check?

Sprite Doctor analyzes every cell in your sprite sheet and helps identify technical problems that can cause jittery or inconsistent animations. It checks sprite alignment, ground-anchor consistency, occupied and empty frames, cell boundaries, clipping risks and animation-row consistency.

Normal pose changes are treated separately so they are not automatically marked as errors or changed by the repair system.

Fix sprite sheet alignment problems

When Sprite Doctor finds a problem that can be repaired safely, it can suggest a correction and apply it directly in your browser. The repaired frame is analyzed again before export to verify that the fix actually improved the sprite sheet.

Private and free

Your sprite sheets are processed locally in your browser. Images are not uploaded to our server. Sprite Doctor is free to use and requires no account or sign-up.

Who is Sprite Doctor for?

Sprite Doctor is built for indie game developers, pixel artists and anyone working with character animations or sprite sheets for games. Use it to inspect assets before importing them into engines and frameworks such as Unity, Godot, Phaser or your own game project.

Sprite Doctor packages the proven Green Candle repair engine into one conservative workflow. Automatic repair remains limited to verified ground drift, isolated horizontal drift, safe boundary repositioning and high-confidence detached fragments. Duplicate and transparent-padding findings remain review-only.