Does it generate a real .svgz file?

No. It produces an estimate report only.

Why estimate instead of real compression?

Real compressed assets should be generated in a build or server pipeline for reliable bytes.

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Estimate gzip compressed size for SVG source.

Estimate gzip compressed size for SVG source.

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

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SVG Gzip Compressor estimates gzip compressed size for SVG source.

The tool parses SVG source and reports a heuristic gzip size estimate for quick comparison.

Use it to compare rough compression impact before wiring real gzip or svgz generation in a build pipeline.