SVG Viewer Online — Preview, Zoom & ViewBox Inspector
Preview SVG markup on light, dark or grid backgrounds, then inspect width, height and viewBox without leaving your browser.
Developer notes
• Best used as a quick visual check before optimize, resize or JSX conversion. • Grid mode helps detect unwanted transparent padding. • Width, height and viewBox are read directly from the root <svg>. • V1 focuses on preview and inspection, not advanced pan/export workflows.
When teams pick this route
• Preview a design-handoff SVG before embedding it in code. • Check whether an icon disappears on dark backgrounds. • Confirm width/height/viewBox values before responsive fixes. • Spot transparent margins around marketing badges and logos.
Worked examples
FastMinify logo preview on light and dark backgrounds
Sample input
Output
Quick viewBox sanity check
Sample input
Output
Navigate related SVG tools
Need to fix scaling next? Open resize SVG. Want a lighter asset? Use optimize SVG or browse the SVG tools hub.
SVG viewer FAQ
Preview and inspect locally
Does it edit the SVG?
No — the viewer is for preview and inspection. Use resize-svg or optimize-svg when you want to change the markup.
Why switch backgrounds?
It helps catch low-contrast artwork, transparent padding, and icons that only look correct on one theme.
Is my SVG uploaded?
Never. Rendering and inspection happen locally in your browser.
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Preview, optimize with SVGO, export Data URI, resize, beautify, convert to JSX and validate SVG — all in your browser.
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