Missing or wrong viewBox breaks SVG scaling. This tool computes the actual bounding box of all SVG elements and sets the correct viewBox automatically. Free.
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 with a missing or incorrect viewBox attribute
The tool calculates the bounding box from all drawn elements
Download the SVG with a corrected viewBox matching the content exactly
0 bytes uploaded. Auto-ViewBox Fixer runs entirely in your browser using the DOM API and Canvas. Your SVGs never leave your device.
The viewBox defines the coordinate area mapped to the SVG viewport. If it's larger than the content, you see whitespace. This tool trims the viewBox to the content bounds.
The tool sets preserveAspectRatio='xMidYMid meet' by default, which is the recommended value for responsive SVGs.
Yes. The tool adds width and height attributes if missing, based on the computed viewBox dimensions. You can override these after download.
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