SVG Optimizer — Compress & Optimize SVG Files Online Free

Optimize and compress SVG files with SVGO

Original SVG

Optimized SVG

What is SVG Optimization?

SVG files exported from design tools like Figma, Illustrator, or Inkscape often contain significant overhead: editor metadata, empty groups, redundant attributes, overly precise decimal coordinates, and comments. SVGO (SVG Optimizer) is the industry-standard Node.js tool for cleaning up these inefficiencies. It applies a configurable set of plugins that transform the SVG's XML structure to produce a semantically equivalent but much smaller file — typically reducing file size by 20–80% without any visible change in the rendered graphic.

Plugin Reference

Remove comments — Strips  XML comments added by editors.
Remove metadata — Removes <metadata> blocks containing Dublin Core / RDF information added by Illustrator and Inkscape.
Clean up IDs — Shortens long, editor-generated element IDs to minimal strings and removes unused ones.
Merge paths — Combines adjacent paths with the same fill and stroke attributes into a single <path> element.
Remove hidden elements — Removes elements with display:none, zero dimensions, or that are fully transparent.
Convert shapes — Converts <rect>, <circle>, <ellipse>, <line>, and <polygon> elements to equivalent <path> commands, enabling further path-level optimizations.
Multipass — Runs all plugins multiple times until no further reduction is achieved. Produces the smallest possible output at the cost of slightly more processing time.

Frequently Asked Questions

Will optimization break my SVG?

For the vast majority of SVGs, no. SVGO's transformations are designed to preserve visual fidelity. However, some advanced SVGs using JavaScript, CSS animations referencing element IDs, or SMIL animations may be affected if "Clean up IDs" renames referenced IDs. Use the side-by-side preview to verify visually before downloading.

Why is my SVG only reduced by a small percentage?

If your SVG was already hand-coded or previously optimized, there is less redundant data to remove. Large path data (d="…" attributes with hundreds of coordinates) is the main target — SVGO rounds coordinates to fewer decimal places, which is the single largest source of savings on complex illustrations.