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Sprite Sheet Packer & CSS Atlas Generator

Processed in your browser

Pack multiple images into an optimized single sprite sheet canvas with CSS classes and JSON coordinate maps.

Select Images to Pack

Packer Canvas Preview

Loaded 0 images.

Generated CSS Rules

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Client-Side Image Manipulation Suite

Direct In-Browser Handoff

Chain this tool with complementary private browser utilities for a complete zero-server workflow:

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Helpful Examples

Default Icon Set

Pack 4 standard UI icons into a single sheet

4 sample icons

How to Use the Sprite Sheet Packer & CSS Atlas Generator

Combine multiple PNG, SVG, or JPEG icon assets into a single optimized sprite sheet. Auto-computes grid dimensions, generates CSS background-position rules, and exports a coordinate JSON atlas.

Privacy & Data Processing Notice

No user data leaves your browser. Computation is executed entirely on your device. We do not store, view, or transmit your inputs over our network. Your computation remains on your personal machine.

Frequently Asked Questions

Why use CSS sprites?

Sprites combine multiple network image requests into a single download, accelerating rendering and page load.

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