SVG Optimizer

It varies significantly by source. SVG files exported from Adobe Illustrator typically include large amounts of Illustrator-specific metadata, layer data, font references, and XML namespaces that are stripped. Inkscape exports carry their own editor namespaces and comments. Figma SVGs are generally cleaner. Typical savings: 20-40% for already-clean SVGs, 40-70% for Illustrator or Inkscape exports with heavy metadata. The tool shows exact byte counts before and after so you always know the result.

Design tools embed proprietary data inside SVG files to preserve their own editing features: Inkscape stores layer names and guide positions in sodipodi: and inkscape: namespaces, Illustrator embeds data in i: and dc: namespaces, and older tools include Sketch or Adobe metadata. None of this is needed to render the SVG in a browser. Removing editor data often produces the largest single chunk of size reduction, especially for complex Illustrator files.

Decimal precision controls how many digits are kept after the decimal point in coordinate values (e.g., d="M 10.3456789 20.1234567"). Reducing from 6 to 2 turns those into d="M 10.35 20.12", saving bytes at the cost of slight coordinate rounding. For icons and simple illustrations, precision 2-3 is invisible. For detailed technical drawings or illustrations with fine curves, stay at 4-5. Check the preview at 100% zoom after reducing precision to catch any rounding artifacts.

SVG elements often have verbose IDs generated by design tools: id="rect_123456789" or id="Layer_1_xA0_Background". Cleaning up IDs replaces these with shorter names like id="a" or id="b", saving bytes across large SVG files with many referenced elements. This is safe for standalone SVG files. If your SVG IDs are referenced by external CSS selectors or JavaScript in your webpage (e.g., document.getElementById("myIcon")), disable this option or update your references after optimization.

Yes. Click "Or paste SVG code" to switch to the code input panel and paste your SVG markup directly. This is useful when you have SVG embedded in an HTML file, copied from a design tool, or generated by a chart library. After optimizing, copy the result with the Copy Code button and paste it back where you need it.

No. The tool uses the browser's built-in DOMParser API to parse and clean the SVG entirely in your browser tab. No file upload occurs, no server processes your SVG, and nothing leaves your machine. This makes it safe to optimize proprietary or sensitive SVG assets such as product diagrams or brand assets.

Optimize before committing. Smaller SVG files mean faster git operations, smaller repository size, and cleaner diffs (since editor metadata often changes on every Illustrator save). A good workflow: export SVG from your design tool, run it through this optimizer, review the preview, then commit the optimized version. Keep the original source file in a separate design assets folder if you need to re-edit it later.