SVG blob generator

Drop a soft vector silhouette behind a headline, behind a product shot, or inside a slide deck without opening Illustrator. You steer how many corners participate, how wild the radius swings get, and whether an outline frames the mass. Everything renders locally, so the shape never leaves your browser until you download or paste markup elsewhere.

Canvas200 px
Vertices8
Edge noise50%

Exports and the preview both honor this pixel square. Large values help print mocks, small values suit icons.

Fill
Stroke color

Outline width scales gently with canvas size so thumbnails stay legible.

Signals the handoff is ready

Markup stays a single path
Engineers paste one <path> inside an inline SVG or sprite sheet. Fewer nodes mean fewer surprises inside CSS transforms.
ViewBox matches the square you chose
When someone scales the graphic, proportions follow the numeric box you exported. Mention the pixel size in your ticket so QA checks the same numbers.
Stroke is optional on purpose
Outlined blobs read louder on busy photography. Fill-only blobs sit quieter behind type. Toggle the outline before you freeze the asset.
PNG is a raster snapshot
Use PNG when a stakeholder insists on email attachments. Return to SVG when the front-end team needs infinite scaling. Rasterize through SVG to PNG after you lock the vector if you need both formats from one source.

When the silhouette fights you

High edge noise with only three vertices produces a chunky triangle, not a soft cloud. Raise the vertex count first, then push noise if you still want a jagged mood.

Neon fills on dark slides look electric on screen yet print flat. For brand decks headed to paper, pull tones from a palette you already proved elsewhere, or sample with the color extractor so marketing and product share one swatch list.

We recommend SVG for production CSS and PNG only for static previews.

What the page computes

The script places vertices around a circle, perturbs each radius with pseudo-random noise, then stitches quadratic segments so the loop closes without gaps. Each slider move samples fresh noise, which is why the outline shifts even when you only nudge edge noise by a point or two.

Fill and stroke attributes live on the path element. Copying markup grabs the entire SVG root, including the xmlns attribute the serializer emits, so pasted fragments behave inside HTML documents expecting namespace declarations.

Downloading PNG rasterizes the same DOM node through an object URL and a canvas draw call. No server receives coordinates, colors, or filenames you pick locally.

Hard boundaries worth stating

This generator does not auto-fit text along a curve, does not boolean-merge multiple blobs, and does not export layered Illustrator files. For photo cutouts you still need masking workflows such as transparent background removal.

Randomness is decorative, not cryptographic. Do not rely on these shapes for security patterns or fingerprinting ideas.

Blob generator: straight answers

Export formats, randomness, and privacy in plain language.

Why does the outline jump when I move a slider?

Vertex count and edge noise both rebuild the ring with fresh random radii each time they change. Tap “New random shape” when you like the slider positions but want another silhouette.

Does Toolexe store the colors I pick?

No upload occurs for this tool. Colors, sizes, and path data stay inside your browser memory until you close the tab or refresh.

Which export should I send to engineering?

SVG markup or the downloaded .svg file. PNG is a convenience raster for decks or chat threads where inline code is awkward.

Am I allowed to trademark a blob from here?

You own files you save, yet the shape is procedurally generated without legal review on our side. Run brand clearance with counsel if the mark must be unique.

Why did PNG export fail?

Some privacy-focused browsers block canvas reads after certain extensions run. Retry in a clean profile, or download SVG and convert locally.

How is this different from the pattern generator?

Patterns tile; blobs stand alone. Use patterns for rhythmic backgrounds and blobs for focal shapes behind headlines or product tiles.