Does this tool optimize the SVG?

No. It explains size. Use SVG Optimizer for optimization.

Does it estimate compressed size?

The initial version focuses on source size and structural contributors.

It can inspect large text input, but very large files may take a moment in the browser.

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Analyze SVG file size, structure, metadata, comments, paths, groups, and optimization hints.

Analyze SVG file size, structure, metadata, comments, paths, groups, and optimization hints.

Choose an SVG file, paste SVG markup, or load the sample to begin.

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SVG File Size Analyzer explains what contributes to an SVG file size, including paths, groups, metadata, comments, and style blocks.

The analyzer counts bytes, characters, elements, paths, groups, styles, comments, and metadata so you can see why an SVG is heavy.

After analysis, use SVG Optimizer to remove safe overhead and compare the optimized output.