Blob Composition Generator

Blob compositions are a fast way to create modern, friendly background graphics for landing pages, app screens, thumbnails, and social posts. This tool helps you build a layered “blob collage” by combining multiple organic SVG shapes into a single composition. You control the canvas size, the number of blobs, the color palette, the opacity, and the randomness seed—so you can generate consistent variations for a brand system or quickly explore fresh looks for clients.

How it works

The generator creates several smooth organic shapes and places them on a single SVG canvas. Each blob is built from randomized control points, then smoothed into a closed path. The tool assigns fill colors from your palette, applies your chosen opacity, and positions each blob with a balanced distribution across the canvas. If you set a fixed seed, you will get the same composition every time—perfect for collaboration, approvals, or regenerating assets later.

What you get

• • A ready-to-use SVG preview in your browser.
• • Raw SVG markup you can copy into projects.
• • A predictable result when using the same seed and settings.

Key features

• • Multi-blob compositions (not just a single shape).
• • Palette-driven coloring (brand-friendly).
• • Adjustable opacity for soft layering effects.
• • Canvas sizing for common design formats.
• • Seed control for reproducible variations.
• • Copy-ready raw output to speed up handoff.

Designed for speed

Instead of drawing shapes manually, you can generate a composition in seconds, then refine the parameters until the result fits your layout. Because the output is vector-based SVG, it stays crisp at any size and is easy to edit in design tools.

Use cases

Blob compositions are versatile. They can be bold and playful for consumer products, or subtle and refined for SaaS and professional websites.

Web and product design

• • Hero backgrounds for landing pages and marketing sites.
• • Section dividers or “feature highlight” panels.
• • Empty states and onboarding illustrations.
• • Background accents behind screenshots and mockups.

Content and social media

• • Thumbnail backgrounds for YouTube, podcasts, and webinars.
• • Instagram story frames and quote cards.
• • LinkedIn banners and announcement graphics.
• • Brand kits with multiple consistent variations.

Optimization tips

• • Use 3–5 colors for a clean, cohesive look. Too many colors can feel noisy.
• • Keep opacity between 0.35 and 0.75 for the classic soft overlap effect.
• • Start with 4–7 blobs for hero backgrounds. Increase for more texture.
• • Pick canvas sizes that match your target output (e.g., 1600×900 for wide headers).
• • Lock a seed once you like a direction, then tweak only one setting at a time.
• • If your UI has a strong grid, align the blob cluster to one side to preserve readability.

SVG works best when you keep complexity reasonable. If you plan to animate blobs or use them on high-traffic pages, consider reducing the blob count and keeping the paths smooth. For print exports, increase the canvas size and keep opacity a bit higher so overlapping colors remain visible.

FAQ

 Can I use the output commercially? 

Yes. The generated SVG is intended to be used in client work, product design, and marketing materials. Always verify your project’s licensing requirements if you combine the SVG with third-party assets.

 How do I keep results consistent across a brand system? 

Use a fixed seed and a stable palette. With the same seed, canvas size, and blob count, you can regenerate identical compositions later and create predictable variations by changing only one parameter at a time.

 Can I edit the SVG in Figma or Illustrator? 

Absolutely. Copy the SVG markup into a file and import it, or paste it directly where supported. You can recolor, rearrange layers, or refine the paths to match your visual language.

 What canvas size should I choose? 

For website heroes, 1600×900 or 1920×1080 is common. For square thumbnails, try 1080×1080. For vertical stories, use 1080×1920. Start with your target layout and adjust for readability.

Why choose this tool

This generator focuses on practical output: clean SVG you can ship, predictable results with seed control, and a premium workflow that fits modern SaaS design. Whether you are building a design system or producing one-off client graphics, you can generate a library of consistent blob compositions in minutes.