Does it remove transform groups?

No. Groups with rendering or transform attributes are preserved.

Does it preserve child elements?

Yes. The child is moved up before the wrapper group is removed.

Does it flatten every nested group?

It repeatedly collapses plain single-child groups that match the safety rule.

Is Collapse SVG Groups free?

Yes. SVGKit tools are free to use with no account required.

Does Collapse SVG Groups upload my files?

No. The tool runs entirely in your browser, so your files never leave your device.

Will Collapse SVG Groups change how my SVG looks?

With safe defaults it should render identically. Aggressive options can subtly affect edges, so compare renders for important artwork.

Yes. Active content is stripped, which is also the safer choice for SVG from unknown sources.

Yes, but the second pass rarely finds more waste. A file that has already been optimized shrinks very little.

SVGKit

← Browse all toolsCollapse SVG Groups

Collapse SVG Groups

Optimize

Collapse redundant single-child groups while preserving visible artwork.

Collapse SVG Groups

Collapse redundant single-child groups while preserving visible artwork.

Result

Choose an SVG file, paste SVG markup, or load the sample to begin.

Page context

Where Collapse SVG Groups fits

Collapse SVG Groups collapses redundant single-child groups while preserving visible artwork.

Related guides

How to optimize SVG files without breaking them

Group cleanup

The tool removes plain g wrappers that only contain one child and no rendering attributes other than id.

Use cases

Use it to simplify exported SVG structure before manual editing, inspection, or additional optimization.

Collapse SVG Groups applies rendering-safe rules and reports the byte delta so the size-versus-risk trade stays explicit.

What gets removed

Editor metadata, comments, empty and hidden elements, redundant group nesting, default attribute values, and excess decimal precision make up most SVG waste. These are the first targets because removing them rarely changes rendering.

Safety defaults

Rendering-safe options come first: the viewBox, referenced IDs, gradients, filters, and masks survive, while active content such as scripts is removed. Stronger passes exist but deserve a visual check.

How to verify nothing broke

Compare the original and the result at small and large sizes, and confirm anything CSS selectors or animation targets reference still resolves. The byte delta is reported so the size-versus-risk trade stays explicit.

Expected savings

Designer-exported files commonly shrink 20-60%. Hand-written or previously optimized files shrink far less, which is expected rather than a sign the tool missed something.

How to use

Paste SVG. Paste SVG markup with nested groups.
Collapse groups. The tool removes redundant group wrappers.
Copy SVG. Copy the simplified SVG source.

Frequently asked questions

Does it remove transform groups?: No. Groups with rendering or transform attributes are preserved.
Does it preserve child elements?: Yes. The child is moved up before the wrapper group is removed.
Does it flatten every nested group?: It repeatedly collapses plain single-child groups that match the safety rule.
Is Collapse SVG Groups free?: Yes. SVGKit tools are free to use with no account required.
Does Collapse SVG Groups upload my files?: No. The tool runs entirely in your browser, so your files never leave your device.
Will Collapse SVG Groups change how my SVG looks?: With safe defaults it should render identically. Aggressive options can subtly affect edges, so compare renders for important artwork.
Are scripts removed?: Yes. Active content is stripped, which is also the safer choice for SVG from unknown sources.
Can I run it twice?: Yes, but the second pass rarely finds more waste. A file that has already been optimized shrinks very little.