SVG Optimizer

An SVG is not a compressed image, it is an XML text document describing shapes, so everything an editor writes into it stays in the file. Illustrator, Figma and Inkscape add their own namespaces and attributes, a DOCTYPE, comments, hidden layers, empty groups, and coordinates carried to six or more decimal places. None of it affects rendering, which is why a plain text cleanup can remove a large share of the bytes with an identical picture.

Comments, the XML prolog and DOCTYPE, metadata blocks, editor-specific attributes and namespaces that nothing references, style blocks whose classes are never used, empty groups and defs, and transforms that do nothing such as translate(0,0) or scale(1). It then rewrites what remains: numbers rounded to three decimals, rgb() colours converted to hex, six-digit hex shortened to three where possible, path data stripped of redundant separators, and whitespace collapsed.

Geometry is rounded to three decimal places, which at any realistic display size is far below a single pixel, so the rendered result is visually identical. The real loss is editability: hidden layers and editor data are gone, so keep the original if you plan to reopen the file in a design tool. Note also what the optimizer does not do, since it never merges paths or converts shapes into paths.

Yes, with no sign-up and no limits. The rewrite happens in a Web Worker inside your browser, which keeps the interface responsive on large files and means the markup never leaves your device.