Sprite Sheet Generator

SpriteForge is an offline Windows desktop tool for turning videos, GIFs, and image sequences into clean sprite sheets and animation frames.

Import MP4, AVI, MOV, WEBM, MKV, GIF, PNG, JPG, WEBP, BMP files, or an entire image-sequence folder. SpriteForge can extract frames, trim empty transparent space, align frames, preview the animation, generate a sprite sheet, and export files ready for Unity or other engines.

• Video, GIF, and image-sequence import
• Frame extraction with FPS and frame-limit controls
• Automatic transparent border trimming
• Frame alignment and thumbnail timeline
• Sprite sheet generation with grid, horizontal, and vertical layouts
• Separate PNG frame export
• Animated GIF export
• Unity-style JSON metadata export
• Works fully offline

No cloud services, no paid APIs, no uploads. Everything runs locally on your PC.