A disk utility that creates pictures
Defrag Simulator recreates the rhythm of classic storage tools without touching a real drive. Choose fragmentation, grid size, virtual hardware, speed, movement and one of six themes, then watch scattered blocks reorganize.
The target can be a normal ordered layout, an uploaded or pasted photo, a built-in motif, up to 14 characters of text or a drawing from the pixel editor. Virtual drive profiles also change the synthesized sound.
Run, share or export
- Configure the theme, drive, grid and target.
- Adjust motion, scatter, sound and optional melody.
- Start, pause, restart, maximize or loop the animation.
- Save the finished grid as PNG or create a deep link.
For retro fans, pixel art and teaching
Defrag Simulator is for retro-computing enthusiasts, pixel-art fans, educators explaining the visual idea of fragmentation, and anyone who enjoys a calm or playful block animation. Storage knowledge is unnecessary because the app never accesses a real drive.
Local processing and limits
Everything runs locally. A shared z link can contain compressed image pixels and should be treated as sensitive when the source image is private. This is only a visual simulation; it never inspects, repairs or modifies storage. Photos are reduced to the chosen block grid and fixed-palette themes quantize their colors; animation pauses while the tab is hidden. The interface is German only.
Sound requires Web Audio after a user gesture, while compact links require Compression Streams. Controls are broadly keyboard accessible and the running animation can be paused, but the block map, previews and pixel editor remain canvas-based; pixel drawing is pointer-only. Theme, simulation, melody, loop, mute and volume preferences stay in local storage; uploaded images are not kept there permanently.
Features worth exploring
Start with these highlights, then open the complete guide for every capability.