SVG Optimizer — Shrink SVG Files, Free

Use SVGO to simplify SVG code and numeric representations while keeping a vector output. This can reduce the structure of a web icon or drawing, but visual equivalence still needs checking.

Runs in your browser
Nothing is uploaded
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Drop files here or click to choose Files stay on your device. Nothing is uploaded.

Coordinate precision 3

Decimal places kept in path data. Two or three is safe for icons; go higher for detailed illustrations.

Run repeatedly until the size stops falling

Shorten and remove unused IDs

Turn this off if CSS or JavaScript on your page targets elements inside the SVG by ID.

Drop width and height attributes

Makes the SVG scale to its container. The viewBox is always kept, so it never stops scaling.

How to use this tool

Choose numeric precision, multipass optimization and ID cleanup settings. If external CSS or scripts refer to SVG IDs, cleanup can affect those connections, so test the actual embedding context as well as the file alone.

Results and examples

Compare file size, curves and line positions in the output. Lower precision can visibly affect small shapes, and removing explicit dimensions can change how the surrounding page determines display size.

Worked example

Optimise a simple icon at coordinate precision three and compare curves and file size. If page CSS targets #logo, disable ID shortening and retest the SVG on its real page.

Limitations

Low coordinate precision can alter small curves and detailed geometry.
ID changes and dimension removal can affect surrounding CSS, scripts and layout.

Fields

Field	Guidance and constraints
Coordinate precision	Decimal places kept in path data. Two or three is safe for icons; go higher for detailed illustrations. · Accepted range: 0–6 · Input step: 1
Run repeatedly until the size stops falling	Check the unit and format displayed beside this field.
Shorten and remove unused IDs	Turn this off if CSS or JavaScript on your page targets elements inside the SVG by ID.
Drop width and height attributes	Makes the SVG scale to its container. The viewBox is always kept, so it never stops scaling.