New. Onion Domain

BlobCDN

Beautiful random SVG blobs, instantly. Generate customizable blobs straight from a URL.

Try itParameters
https://blobcdn.com/blob.svg

Why BlobCDN

A tiny API that does one thing well.

Instant generation

Blobs are generated and served from a URL. No SDK, no install, just an image.

Fully customizable

Tune points, randomness, size, fill, and stroke with simple URL parameters.

Deterministic with seeds

Pass a seed and get the same blob every time. Skip it for fresh randomness.

Examples

Different parameter combinations and the shapes they produce.

  • Smooth organic

    Smooth organic

    Minimal points, low randomness

    extraPoints=2&randomness=3
  • Complex shape

    Complex shape

    Many points, high variation

    extraPoints=8&randomness=10
  • Outlined style

    Outlined style

    Transparent fill with stroke

    stroke=8b5cf6&strokeWidth=3
  • Vibrant fill

    Vibrant fill

    Bold color, mid variation

    fill=f59e0b&extraPoints=5
  • Minimal blob

    Minimal blob

    Simple three-point shape

    extraPoints=0&randomness=4
  • Chaotic form

    Chaotic form

    Maximum variation

    extraPoints=12&randomness=15

Parameters

Customize blobs with URL query parameters.

  • seednumber | stringA given seed will always produce the same blob.random
  • extraPointsnumberTotal points equals 3 plus this value.4
  • randomnessnumberIncreases the amount of variation in point position.6
  • sizenumberSize of the bounding box, in pixels.256
  • fillhex colorColor for the shape.random
  • strokehex colorColor for the stroke.none
  • strokeWidthnumberWidth of the stroke line.0
https://blobcdn.com/blob.svg?seed=123&size=512&fill=8b5cf6