What does the SVG Preview tool do?

It renders SVG markup live as you type, shows extracted attributes (width, height, viewBox), and produces a data: URI you can paste straight into CSS or HTML. Useful for debugging SVG icons, gradients, and viewBox math without spinning up a project.

Is the preview sandboxed?

Yes. The SVG renders inside a sandboxed iframe to isolate it from the rest of the page. Inline JavaScript inside the SVG won't run.

Can I download or copy the SVG?

Yes — copy the raw SVG text or the URL-encoded data: URI from the controls in the header.

SVG Preview / Editor

Checkered background

width: 200height: 200viewBox: 0 0 200 2007 elements

SVG source

Preview

Technical details

How the SVG Preview / Editor Works

What the Tool Does

The SVG Preview / Editor renders SVG markup live as you edit it and extracts metadata (width, height, viewBox, element count) for quick inspection. A toggle adds a checkered background so you can see transparent regions clearly. The tool also produces a URL-encoded data URI suitable for use directly in CSS background-image or HTML src attributes.

Common Developer Use Cases

Icon designers test viewBox math and stroke widths at different sizes. Frontend developers verify that a hand-edited SVG icon still renders correctly after optimization (manual or via SVGO). Email developers generate compact data URI versions of brand marks for inlining in HTML. Educators demonstrate how attributes like preserveAspectRatio and overflow affect rendering.

Data Formats, Types, or Variants

Input is raw SVG XML markup. Output is the same SVG rendered in a sandboxed iframe plus a URL-encoded data URI (data:image/svg+xml;charset=utf-8,…). The element-count metric counts every opening tag (including defs, g, gradients, and similar nested elements), giving a rough sense of complexity. Extracted attribute values are shown in raw form.

Common Pitfalls and Edge Cases

External resources referenced by `use` or `image` elements with href won't load inside the sandboxed iframe. Inline JavaScript inside script elements is blocked by the sandbox — animations should rely on SMIL or CSS keyframes. SVGs that depend on a specific font that isn't system-installed will fall back to a default; embed fonts or use system fonts for previews.

When to Use This Tool vs Code

Use the browser tool for one-off icon design, debugging, or generating data URIs. For production assets, run SVGs through SVGO with a tuned config to strip metadata and minify markup, and use a sprite system or proper bundler integration to load icons in your app rather than inlining data URIs everywhere.