SVG Optimizer Online
Optimize and minify SVG files. Reduce size without changing visual appearance.
What you can do
Optimize SVG for web production
100% private
Your SVG is optimized in your browser. Never uploaded to any server.
Up to 90% smaller
Removes Illustrator, Inkscape, and Figma bloat. Only the essentials remain.
Appearance preserved
Optimizations are safe: visual appearance does not change in the vast majority of cases.
Production-ready
Download the optimized SVG and insert it directly into your HTML or CSS.
How it works
Three steps, no hassle
Upload your SVG file
Drag or select your .svg file exported from Illustrator, Inkscape, Figma, or any other editor.
Automatic optimization
The SVG is cleaned and minified: unnecessary metadata, comments, redundant attributes are removed and paths are optimized.
Download the optimized SVG
Compare size before and after. Download the production-ready SVG with one click.
FAQ
Got questions?
In the vast majority of cases, no. The safe optimizations performed by the tool (removal of metadata, comments, hidden elements, redundant attributes, and path simplification without precision loss) do not affect visual appearance. However, there is a small set of optimizations that can cause changes in edge cases: reducing decimal precision in coordinates can slightly affect the shape of very detailed paths (though visually imperceptible in most cases), and removing certain CSS attributes can affect SVGs with complex styles. For SVGs that will be used as simple icons or static illustrations, optimization is completely safe. For SVGs with CSS or JavaScript animations that depend on specific IDs or classes, reviewing the result before using it in production is recommended.
SVG optimization removes everything unnecessary for visual rendering. In the unnecessary metadata category: <?xml version='1.0'?> declarations when not needed, DOCTYPE declarations, comments (except license comments that some organizations require preserving), XML metadata elements, and Inkscape (inkscape:, sodipodi:), Adobe Illustrator (ai:, i:), and CorelDRAW namespaces. In the redundant attributes category: attributes with default values (like fill='black' when black is already the default), style attributes that can be consolidated in the style attribute or CSS. In the geometry category: paths with redundant commands (moveto followed immediately by another moveto), empty subpaths, and identity transforms (transform='translate(0,0)'). Path optimization converts Bezier curves to shorter forms when possible and reduces decimal precision of coordinates.
Savings vary enormously depending on the SVG source. SVGs exported from Adobe Illustrator are notoriously bloated: they can contain tens of kilobytes of application metadata, hidden layers, unused definitions, and unoptimized paths. A simple icon exported from Illustrator at 50 KB can be reduced to 3-5 KB after optimization (90%+ reduction). Figma SVGs are cleaner but still have room for improvement: 30-50% reductions are common. Inkscape SVGs have application-specific metadata (sodipodi and inkscape namespaces) that add unnecessary weight for production: 40-60% reductions are typical. For already manually optimized SVGs, gains are smaller (10-20%). On average, SVGO reports a median reduction of 55-65% in its benchmarks with real-world test SVGs.
Absolutely. Unoptimized SVGs have a direct impact on web performance. An 80 KB SVG vs an optimized 8 KB one represents 10x less data that the browser must download, parse, and render. The impact is especially notable on mobile devices with slow connections. For SVG icons (the most common on the web), the optimal size after optimization should be under 1 KB for simple icons and under 10 KB for complex illustrations. Beyond direct size reduction, optimized SVGs compress better with gzip or Brotli (HTTP compression algorithms), because cleaner files have lower entropy. Performance audit tools like Google's Lighthouse penalize unoptimized assets, including oversized SVGs, in their Performance scores.
Yes, certain aggressive optimizations can break SVGs with interactivity. The main cases are: (1) ID removal: if an SVG has CSS or JavaScript animations that reference elements by their ID (document.getElementById or CSS animation with keyframes tied to IDs), removing those IDs will break functionality. (2) Class removal: similar to the previous case with CSS classes. (3) Group collapsing: merging <g> groups can change rendering order or eliminate reference points for animations. (4) Style inlining: converting CSS classes to inline style attributes can interfere with external CSS targeting those classes. For animated or interactive SVGs, the recommendation is to use a conservative optimization profile that preserves IDs and classes, or manually review the result.
SVGO (SVG Optimizer) is the most widely used SVG optimization tool in the JavaScript/Node.js ecosystem. It was created by Kir Belevich in 2012 and is available as an npm package (npm install -g svgo). SVGO uses a plugin architecture: each type of optimization is an independent plugin that can be individually enabled or disabled. Plugins are organized in two categories: preset-default (plugins enabled by default, considered safe) and optional plugins (more aggressive, disabled by default). SVGO v3 (released in 2022) is the current version, with full SVG 2.0 support and improved optimizations. The tool integrates into the most popular build systems: there is svgo-loader for webpack, @svgr/webpack for React (which uses SVGO internally), vite-plugin-svgo for Vite, and plugins for Rollup and esbuild. In 2020, Jake Archibald created SVGOMG, a web interface for SVGO that allows visualizing the result and adjusting plugins interactively.
SVG optimization: SVGO, paths, viewBox, and web performance
The SVG (Scalable Vector Graphics) format was developed by the W3C and became an official recommendation in 2001 with SVG 1.0, though its widespread web adoption came with HTML5 and native support in all major browsers around 2012. SVG 1.1 (second edition, 2011) is the most widely supported version currently. SVG 2.0 is in active development at the W3C with partial support in modern browsers. The main advantage of SVG over raster formats like PNG or JPG is its resolution independence: a 1 KB SVG looks perfect on a 72 DPI screen, on an iPhone Retina at 458 DPI, and on an 8K display at 220 DPI, without pixelation. This is especially important in the ecosystem of screens with different pixel densities (DPR, Device Pixel Ratio) that have dominated the market since 2012. SVGs generated by design tools contain significant amounts of unnecessary data: Adobe Illustrator includes its own XML namespace (xmlns:ai), editing session data in <foreignObject> elements, Illustrator layers as groups with proprietary attributes, and in older versions even embedded raster preview images. Inkscape adds the inkscape: and sodipodi: namespaces, which include editor UI information (view position, zoom, guides) completely unnecessary for rendering. Figma exports cleaner SVGs but includes Figma layout elements and sometimes custom data- attributes.
SVG path optimization is the type of optimization with the greatest impact on file size for illustration SVGs. The SVG path format uses a mini-language with commands like M (moveto), L (lineto), C (curveto with cubic Bezier), Q (curveto with quadratic Bezier), A (arc), Z (closepath) and their relative coordinate variants (m, l, c, q, a, z). Design editors export paths with excessive precision: coordinates with 6-8 decimals (e.g., M 123.456789 234.567890) when in practice 1-2 decimals are sufficient for visually indistinguishable quality. Reducing decimal precision from 6 to 1 can reduce path size by 60-70% without perceptible visual change. Path merging (when multiple paths with the same style are adjacent) and Bezier simplification (replacing complex curves with simpler approximations) are other important techniques. The viewBox attribute is critical in SVG optimization: it defines the SVG's internal coordinate system and must always be preserved. An SVG without viewBox does not scale correctly with CSS. The optimization tool always preserves the viewBox intact. It is also important to preserve necessary xmlns: attributes (primarily xmlns='http://www.w3.org/2000/svg') while removing application-specific namespaces.
In the context of modern web development, optimized SVGs have three primary uses: sprite format icons, inline HTML illustrations, and CSS background images. For icons, the SVG sprite practice (combining multiple icons in a single SVG file with symbol elements referenced with use xlink:href) was popularized by Chris Coyier at CSS-Tricks around 2012 and remains relevant for large-scale icon systems. Frameworks like Heroicons (Tailwind CSS), Feather Icons, Lucide React, and Phosphor Icons distribute their icons as optimized SVGs with sizes under 1 KB. For inline illustrations, inserting SVG directly into HTML allows manipulation with CSS and JavaScript, color transitions with CSS custom properties (CSS variables), and animations with CSS or SMIL. The decision between using SVG as <img src='image.svg'>, as inline <svg>, or as background-image in CSS has performance implications: SVG as img is cached by the browser but cannot be manipulated with CSS; inline SVG is not cached but is fully manipulable. SVGO integrates into modern bundlers: Vite, using the vite-plugin-svgr plugin, can import SVGs as React components already optimized with SVGO at build time, eliminating the need for manual optimization in the development workflow.