Optimize and minify SVG files online. Remove metadata, comments, editor data, and unnecessary attributes to reduce file size — free browser-based SVG cleaner with live preview.
SVG Optimizer is a free online tool that reduces SVG file size by removing unnecessary metadata, comments, editor-specific data, and redundant attributes — without changing how the SVG looks. SVG files exported from design tools like Figma, Adobe Illustrator, and Inkscape often contain significant amounts of non-visual data that inflates file size. This tool strips all of that away, producing clean, lean SVG code ready for production use. All processing happens in your browser — your files are never uploaded to any server.
Use SVG Optimizer whenever you're preparing SVG icons, logos, or illustrations for your website. It's especially valuable when working with SVGs exported from design tools that embed large amounts of metadata, when you need to inline SVGs directly in your HTML for styling with CSS, or when you want to reduce page load times by minimizing the size of SVG assets in your project.
Frontend developers use this tool to optimize SVG icons before including them in component libraries, clean up SVG logos for embedding in headers and footers, prepare SVG illustrations for lazy-loaded hero sections, and minimize SVG sprites used across the application. It's also useful for cleaning up SVGs before converting them to React/Vue components, where unnecessary attributes can cause build warnings.
Essential terms and definitions related to SVG Optimizer.
An XML-based vector image format for two-dimensional graphics that can be scaled to any size without quality loss. Unlike raster formats (PNG, JPEG), SVG describes shapes mathematically using elements like <path>, <rect>, <circle>, and <text>. SVGs are widely used for icons, logos, illustrations, and data visualizations on the web because they remain sharp at any resolution and can be styled with CSS.
An SVG attribute that defines the coordinate system and aspect ratio of the graphic. Written as viewBox="minX minY width height", it establishes a virtual canvas that the SVG content is drawn on. The viewBox enables responsive scaling: an SVG with viewBox="0 0 24 24" will scale to fill any container while maintaining its 1:1 aspect ratio. Without a viewBox, SVGs may not scale correctly across different display sizes.
Non-visual data embedded in SVG files that increases file size without affecting appearance. This includes XML comments (<!-- -->), processing instructions (<?xml?>), editor-specific namespaces (xmlns:inkscape, xmlns:sodipodi), generator comments, title/desc elements, and default attribute values. Removing metadata is the primary way SVG optimizers reduce file size without changing visual output.
The d attribute on SVG <path> elements contains a sequence of drawing commands and coordinates that define complex shapes. Commands include M (moveTo), L (lineTo), C (cubic Bézier curve), Z (closePath), and their lowercase relative variants. Path data is typically the largest portion of an SVG file. Optimization techniques include removing unnecessary precision (10.000 → 10), converting absolute to relative coordinates, and shorthand notation.
Typical SVG optimization reduces file size by 30–70%, depending on the complexity of the file and how much metadata it contains. SVGs exported from design tools like Figma, Illustrator, or Inkscape often contain large amounts of editor-specific metadata, comments, hidden elements, and default attribute values that can be safely removed. Simple icon SVGs may shrink by 50% or more.
No. This tool only removes non-visual data: metadata, comments, XML processing instructions, editor namespaces (Inkscape, Illustrator), empty elements, and redundant attributes. The visual appearance of the SVG remains identical. You can verify this with the live preview that shows both original and optimized versions side by side.
Yes. The optimizer preserves SVG animation elements (animate, animateTransform, animateMotion) and their attributes. Only non-visual metadata and redundant attributes are removed. If your SVG uses CSS animations defined in a <style> block, those are also preserved.
No. All SVG processing happens entirely in your browser using JavaScript and the DOMParser API. Your SVG content never leaves your device, making this tool safe for proprietary icons, logos, and design assets.
SVG optimization removes unnecessary code (metadata, comments, redundant attributes) from the XML source to reduce file size — the result is still a valid SVG. Compression (gzip/brotli) is applied by web servers during HTTP transfer, further reducing the bytes sent over the network. For best results, optimize your SVGs first (with this tool), then serve them with gzip or brotli compression enabled on your server — the combined effect can reduce SVG payload by 80–95%.
Common errors developers encounter and how to resolve them.
SVG appears broken after optimization: Missing namespace declarations If an SVG uses elements from external namespaces (like xlink:href for linked images), removing the namespace declaration will break the reference. This tool preserves standard SVG and xlink namespaces. If your SVG uses custom namespaces, the references will be kept. For SVGs that rely on deprecated xlink:href, modern browsers also support the plain href attribute — consider updating your SVG to use href instead.
Figma/Illustrator SVG export contains excessive metadata Design tools embed significant metadata in exported SVGs: Illustrator adds its own XML namespace and generator comments, Figma includes data-name attributes and layer names. This tool removes all such editor-specific data. For best results, also check your export settings: Figma's "Outline Text" option prevents font embedding, and Illustrator's "SVG Tiny" profile produces leaner code.
SVG icons look blurry or misaligned at small sizes This is not caused by optimization — it happens when SVG coordinates use fractional values (e.g., x="10.5") that don't align with the pixel grid. For crisp icons at small sizes, ensure your SVG viewBox dimensions are integers and path coordinates snap to whole or half-pixel values. Many icon packs (Lucide, Heroicons) use a 24×24 viewBox with integer coordinates for this reason.
Large SVG file causes browser to slow down during optimization Very complex SVGs with thousands of path elements (like detailed maps or data visualizations) can take time to parse and process. For SVGs over 1MB, the optimization may take a few seconds. If the browser tab becomes unresponsive, try simplifying the SVG in your design tool first by flattening layers, combining overlapping paths, or reducing path point count.