Free Online CSS Sprite Generator — Combine Images & Auto-Generate CSS
Create optimized CSS sprite sheets from multiple images with our free online sprite generator. Upload your icons or images, choose a layout direction (horizontal, vertical, or grid), set the padding, and instantly get a combined sprite sheet plus the exact CSS code with correct background-positions. CSS sprites reduce HTTP requests by bundling many small images into one, improving your website's loading speed. Perfect for icon sets, UI elements, and button states. All processing happens locally in your browser.
Upload multiple images (icons, buttons, or UI elements) to combine into one sprite sheet.
Choose a layout direction (horizontal, vertical, or grid) and adjust the padding between images.
Preview the sprite sheet, copy the generated CSS code, and download the sprite image.
Tips for Creating CSS Sprites
- Use images of similar size for best results. Large size differences may make positioning less predictable.
- Grid layout is ideal for icon sets with uniform sizes. Horizontal works well for button states and nav items.
- Keep a padding of at least 2-4px between images to avoid visual overlap when using the sprite in production.
Frequently Asked Questions — CSS Sprite Generator
What is a CSS sprite?
A CSS sprite is a single image file that combines multiple smaller images (icons, buttons, etc.) into one. By using CSS background-position, you display only the portion of the sprite sheet you need. This reduces HTTP requests and improves page load speed.
Is the CSS sprite generator free?
Yes, completely free. No registration, no hidden charges, and no watermarks. All processing happens locally in your browser.
What image formats are supported?
The tool supports all common image formats including JPG, PNG, WebP, GIF, BMP, AVIF, SVG, and more. PNG is recommended for sprites to preserve transparency.
How do I use the generated CSS code?
Copy the CSS code and paste it into your stylesheet. Place the downloaded sprite image in your project's assets folder and update the background-image URL path to match your project structure.
What layout should I choose?
Horizontal layout places images in a row — ideal for button states and nav items. Vertical layout stacks them — great for dropdown menus and lists. Grid layout arranges them in a compact grid — best for icon sets with uniform sizes.
Does the tool support high-DPI (Retina) images?
The tool preserves your original image dimensions. For Retina support, upload images at 2× size and use CSS background-size to scale them down in your stylesheet.
Can I reorder the images in the sprite?
The images are arranged in the order you upload them. To change the order, simply remove and re-upload them in the desired order.