Instantly estimate how small your SVG will be after HTTP compression. Compare raw size vs. gzip vs. brotli — understand the real network cost before and after optimization.
Available on every plan, including the free tier.
Single file up to 5 MB · 1 file per job
Up to 50 MB per file · batch up to 20 files · API + MCP access
Up to 2 GB per file · unlimited batch · runner acceleration · priority MCP
Drop your SVG file or paste the source code
The estimator runs DeflateRaw compression in-browser to simulate gzip/brotli
View a breakdown: raw size, estimated gzip size, estimated brotli size, and savings
0 bytes uploaded. Gzip/Brotli Estimator runs entirely in your browser using the DOM API and Canvas. Your SVGs never leave your device.
Gzip estimation uses the browser's CompressionStream API — it produces the exact deflate output. Brotli is estimated from gzip with a typical 15–20% improvement factor.
Most modern web servers compress text responses including SVG if you configure the correct MIME type (image/svg+xml). This tool helps verify the expected savings.
SVGs typically compress 70–85% with gzip due to their repetitive XML structure. Well-minified SVGs can still achieve 60–75% compression.
Remove XML comments, redundant attributes, empty tags, and unnecessary namespaces from SVG files. Browser-only, zero upload — achieve 40–70% size reduction.
Open toolRound path coordinates from 12.00004 to 12 across your entire SVG. Dramatically reduces file size without visible quality loss. Runs locally in your browser.
Open toolReduce the number of control points in SVG paths using the RDP simplification algorithm. Smaller paths, faster rendering, lower file size — with configurable quality.
Open tool