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Images, SVG & Asset Tools

Free SVG Optimizer

Clean up SVG files by stripping unnecessary content that bloats file size. Removes XML comments, doctype declarations, editor metadata (Adobe Illustrator, Inkscape, Sketch, Figma), empty groups, default attribute values, and redundant whitespace. The tool shows a before-and-after size comparison and lets you download the optimized SVG. All processing happens in your browser.

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What is SVG Optimizer?

SVG Optimizer is a browser-based tool that reduces SVG file sizes by removing elements that do not affect the visual output. SVGs exported from design tools like Figma, Illustrator, and Inkscape often include editor-specific metadata, comments, unused definitions, and verbose formatting. This tool strips those safely and shows exactly how much space was saved.

quickAnswer

Paste SVG markup or upload an SVG file to strip comments, metadata, editor data, and excess whitespace. See the size comparison before and after, then copy or download the optimized SVG. All processing is local.

Last updated: 2026-06-09

limitations

  • The optimizer performs structural cleanup only. It does not perform path optimization (simplifying curves, combining paths) which requires different algorithms.
  • SVGs with embedded raster images (base64-encoded PNG/JPEG inside the SVG) may not see significant size reduction since the embedded image data is preserved.
  • Some SVG files may use non-standard or custom namespace prefixes that the optimizer does not recognize and therefore cannot strip.

Sources:MDN Web Docs · W3C Specifications · jquery.app on GitHub

How to use this tool

  1. Paste SVG markup or upload an SVG file into the input area.
  2. The tool automatically processes the SVG and shows the optimized output alongside the original.
  3. Review the before/after size comparison and optionally toggle individual optimizations (remove comments, remove metadata, collapse whitespace).
  4. Copy the optimized SVG code or download it as an .svg file.

What you can use it for

  • Reduce SVG file sizes before embedding them in web pages, improving page load performance.
  • Clean up SVGs exported from design tools before committing them to a code repository.
  • Prepare SVGs for use in CSS data URIs where smaller sizes reduce overall stylesheet weight.

Use cases

Practical examples

example

Figma export cleanup

A designer exports an icon set from Figma. The raw SVGs average 4KB each and contain Figma metadata, empty groups, and verbose path data. The developer runs them through the SVG Optimizer, reducing the average size to 1.2KB -- a 70% reduction -- with no visible difference in the rendered icons.

example

Inline SVG performance boost

A landing page uses a decorative hero SVG that is 28KB raw. Running it through the optimizer strips Illustrator metadata and redundant viewBox attributes, collapsing the file to 9KB. Inlining the optimized SVG in the HTML saves a network request and reduces page weight.

Common mistakes

  • Assuming smaller SVG always means visually identical -- some aggressive optimizations can remove elements like clip-paths or masks that affect rendering. Always preview the optimized SVG before deploying.
  • Removing the viewBox attribute -- the viewBox is critical for proper SVG scaling. The optimizer preserves it, but if you manually edit the output, ensure the viewBox is not accidentally dropped.
  • Overlooking reusable symbol definitions -- if an SVG contains <defs> with symbols used elsewhere, the optimizer keeps them. But stripping IDs from reusable elements can break references within the SVG.

verification

  1. Upload an SVG exported from a design tool. Verify the output no longer contains editor metadata (e.g., xmlns:inkscape, figma:type attributes).
  2. Open both the original and optimized SVG in a browser or SVG viewer. Verify they render identically despite the size difference.

FAQ

Questions about SVG Optimizer

What exactly does the optimizer remove from SVG files?

The optimizer removes XML comments, doctype declarations, editor-specific metadata (xmlns:inkscape, xmlns:sodipodi, figma attributes, etc.), empty groups, default attribute values, redundant namespace declarations, and unnecessary whitespace. It does not alter the visual rendering.

Does the optimizer minify path data?

This tool focuses on structural cleanup rather than path data optimization. For further size reduction, you can pipe the output through a dedicated SVG path optimizer. Combining structural cleanup with path optimization typically yields the best results.

Will this break inline CSS in my SVG?

No. Inline CSS, <style> blocks, and class-based styling are preserved. The optimizer only removes comments, metadata, and whitespace -- it does not modify selectors or style rules.

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