SVG Optimizer
Optimize and minify SVG files by removing metadata, comments, and unnecessary attributes.
About This Tool
The SVG Optimizer is a free, browser-based tool that reduces the file size of SVG images by removing unnecessary metadata, comments, editor-specific attributes, and redundant code. Scalable Vector Graphics (SVG) files exported from design tools such as Adobe Illustrator, Figma, Inkscape, and Sketch often contain a significant amount of bloat that serves no purpose when the image is rendered on the web.
Optimizing your SVGs is one of the most impactful things you can do for web performance. Because SVGs are text-based XML, they compress well, but starting from a smaller file means faster parsing, lower bandwidth usage, and improved Largest Contentful Paint (LCP) and Cumulative Layout Shift (CLS) scores. For pages that use many icons or illustrations, the cumulative savings can be substantial.
This tool runs entirely in your browser using the native DOMParser and XMLSerializer APIs. No data is uploaded to any server, making it safe for proprietary artwork, brand assets, and any SVG containing sensitive information. You have granular control over each optimization step via toggle checkboxes, so you can preserve elements like titles and descriptions when accessibility requires them.
Advanced options include minification (collapsing all whitespace into a single line), rounding numeric coordinate values to a configurable precision, removing default attribute values that browsers apply automatically, and stripping inline style attributes. The side-by-side preview lets you visually confirm that the optimized SVG renders identically to the original before you download or copy the result.
How to Use
- Paste your SVG code into the Input SVG textarea, or drag and drop an
.svgfile onto the input area. - Review and adjust the Optimization Options. Options that are enabled by default cover the most common optimizations without altering visual output.
- The optimized SVG appears automatically in the Optimized SVG panel. Check the file size comparison bar to see the savings.
- Use the Original Preview and Optimized Preview panels to visually confirm the output matches the original.
- Click Copy to copy the optimized SVG to your clipboard, or Download to save it as a file.
- Use the keyboard shortcut Ctrl+Shift+C to quickly copy the optimized output.
FAQ
Is my SVG data safe when using this tool?
Yes. All optimization is performed entirely in your browser using native JavaScript APIs. Your SVG data is never uploaded to any server, logged, or shared with third parties.
Will the optimized SVG look different from the original?
The default optimization options (removing comments, metadata, editor attributes, empty groups, and unused IDs) do not affect the visual rendering. Advanced options like removing style attributes or default attribute values may change appearance in certain edge cases, so always compare using the side-by-side preview.
How much file size reduction can I expect?
Savings vary depending on the source. SVGs exported from Adobe Illustrator or Inkscape typically contain significant editor metadata and can be reduced by 20-60%. Simple SVGs with minimal metadata may only see a 5-15% reduction. Enabling minification and numeric rounding increases savings further.
What does "Remove editor attributes" do?
Design tools like Inkscape, Illustrator, and Sketch add proprietary namespaced attributes (e.g., inkscape:label, sodipodi:insensitive) and XML namespace declarations that are only meaningful inside the editor. Removing them has no effect on how browsers render the SVG.
What is the "Round numeric values" option?
Many SVGs contain coordinates and dimensions with excessive decimal precision (e.g., 100.123456). Rounding these to fewer decimal places (e.g., 2 digits) reduces file size with minimal visual impact. You can adjust the precision from 0 to 4 decimal places using the slider.
Can I optimize SVGs with embedded images or fonts?
Yes. The optimizer processes the SVG markup without altering embedded Base64 images or font data. However, note that embedded raster images already take up significant space and cannot be reduced by this tool. Consider using a dedicated image compressor for embedded bitmaps.
Why should I remove the XML declaration?
The <?xml ...?> declaration and <!DOCTYPE> are not required when SVGs are inlined in HTML5 documents or served with the correct MIME type. Removing them saves a small amount of bytes and avoids potential parsing issues in some contexts.
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