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SVG Blob Generator

Adjust points, randomness, size and fill color to generate smooth organic blob shapes as SVG. Regenerate, copy and download supported.

Last updated: 2026/10/16 Design Feedback & bug reports
Preview
6
45%
500
SVG Code 

            


            
            

                

                    data-URI (for CSS)
                    
                

                

            


        

    




    
    



    
How to Use

    

        

            
1

            

                
Shape the Blob

                
Use the points (complexity) and randomness sliders to shape the blob outline as you like.

            

        

        

            
2

            

                
Pick Color & Size

                
Choose a solid or gradient fill, set the colors and SVG size. Hit "Regenerate" to try different shape variations.

            

        

        

            
3

            

                
Get the Code

                
Copy the SVG code or the CSS data-URI, or download the SVG file and use it right away.

            

        

    






    

        

            
About SVG Blobs

            
A blob is a smooth, organic shape created by irregularly deforming a circle. Blobs are widely used for website background decorations, hero sections, icon backgrounds and social images, giving a soft and friendly impression. This tool places points around a circle, varies their radius randomly, then connects them with a smooth closed bezier curve to generate the blob. Everything runs entirely in your browser.

        

        

            
Features

            
    
                
  • Adjustable Points & RandomnessFreely adjust the number of points (complexity) and randomness, from simple to complex shapes.
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  • Smooth Closed CurvesBezier curves generated via Catmull-Rom interpolation produce smooth, corner-free organic forms.
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  • SVG / data-URI OutputOutputs ready-to-paste SVG code and a data-URI you can use in CSS backgrounds and more.
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  • Browser-only & FreeNo registration or installation. All processing happens in your browser and no data is sent.
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Use Cases

            
    
                
  • Website background decorations
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  • Accent shapes for hero sections and landing pages
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  • Background masks for icons and avatars
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  • Design assets for social posts and thumbnails
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  • Decorations for slides and banners
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FAQ

    

        
Is the SVG Blob Generator free to use?
Yes, it is completely free. No registration required - just open it in your browser and start using it.

        
How do I use the data-URI?
Paste the copied data-URI directly into CSS background-image: url("...") or the src attribute of an img tag. It displays the image without loading an external file, reducing the number of requests.

        
Can I use the generated SVG commercially?
Yes. The shapes you generate are yours to use freely - for websites, print, social media and any purpose, commercial or non-commercial.

        
Can I recreate the exact same shape later?
Each time you press "Regenerate" a new random shape is created. When you find one you like, copy or download the SVG code right away to keep it. Even with identical settings (points, randomness, color, size), the shape changes each time due to the random element.

        
Is my input sent to a server?
No. Shape generation, preview and code output all happen entirely within your browser. You can use it with peace of mind.

    













    
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