SVG Optimizer

SVG optimization is the process of cleaning up and minifying the underlying XML source code of Scalable Vector Graphics (SVG) files. Since SVGs are text-based markup files, vector graphic design suites (such as Adobe Illustrator or Inkscape) often export them with excess baggage, including creator comments, editor namespaces, empty groups, duplicate definitions, and high-precision coordinates. Stripping these unnecessary bytes reduces file sizes by up to 80% without altering the rendering output.

Yes, 100%. ToolZeno runs all optimization logic locally inside your browser using the client-side SVGO engine and Web Workers. Your files are never uploaded to any remote servers or external databases. Your code remains completely private and secure on your local device.

Safe Mode applies rules that clean up whitespace, remove comments, strip metadata, and remove editor namespaces without risk of altering the rendering layout. Maximum Compression (Aggressive) applies rules that merge paths, collapse group containers, minify style blocks, and clean ID elements. While Aggressive mode yields maximum byte savings, it can occasionally break SVGs that rely on javascript scripting or external CSS targeting specific IDs.

Yes. Standard SVG files can hold interactive JavaScript scripts (using <script> elements) or script handlers (like onload or onclick). These pose cross-site scripting (XSS) risks. By default, our optimizer cleanses and strips javascript nodes and event handles to ensure safe, sanitized SVGs suitable for web embedding.

A viewBox attribute defines the aspect ratio and coordinate systems of the SVG canvas, which is crucial for modern responsive design. If an SVG lacks a viewBox and only declares hardcoded width and height attributes, the browser cannot scale the vector graphic responsively on smaller mobile devices. Our validation panel flags this and recommends adding a viewBox for responsive alignment.