svgtools
Free · Single-file output · Optimized

SVG Sprite Generator

Drop a folder of icons and get back one optimized sprite plus a ready-to-paste HTML snippet. Perfect for design systems and icon sets.

  • Combine many SVGs into a single <symbol>-based sprite
  • SVGO runs on each icon before it joins the sprite
  • Copy-paste <use> snippets for instant integration
  • Filenames become predictable kebab-case symbol IDs

What is an SVG sprite?

An SVG sprite is a single SVG document containing many<symbol> definitions, each holding one icon. Pages reference an icon with<use href="#icon-id" /> instead of loading a separate file. The browser fetches and parses the sprite once, caches it, and reuses every symbol from then on. For UIs with dozens of icons that means one HTTP request and one parse pass instead of 30 — an obvious win on cold loads, especially over mobile networks.

Sprite vs inline SVG vs icon font

  • Inline SVG (the JSX/SFC component approach) is great for small icon counts that ship with your JS bundle. It gives you full prop control but pays bundle-size and serialization cost on every page render.
  • SVG sprite separates icon delivery from your JS bundle. The sprite loads once, cached separately from your scripts, and any page can reference it. Best for icon-heavy UIs where the same icons are used across many pages.
  • Icon fonts are a legacy approach. They ship as binary glyph data, lose styling flexibility (only color, only one path per icon, no multi-color icons), and have accessibility and rendering quirks. Sprites supersede icon fonts in every modern stack.

How the generator works

  1. Drop your icons. A folder of .svg files is ideal. Filenames become symbol IDs after kebab-casing (ArrowRight.svg → arrow-right); duplicate IDs are auto-suffixed so the sprite is always valid.
  2. Optimization runs first. Each icon goes through SVGO with your current plugin configuration before it is wrapped in a<symbol>. That means the sprite ships only the bytes it needs.
  3. Inspect the output. The generated sprite is shown alongside a copy-paste HTML snippet that demonstrates how to render every icon with<use>.
  4. Export. Download the sprite as a singlesprite.svg file, or copy the contents to paste directly into a template or layout file.

Using the sprite in production

The two common patterns:

External file

Host sprite.svg alongside your other static assets and reference it with <use href="/sprite.svg#icon-id" />. The browser fetches the sprite on first use and caches it. Works in every modern browser; Internet Explorer needs a polyfill, which is no longer relevant for most projects.

Inline at the top of the document

Paste the sprite into the top of your <body> withstyle="display:none" and reference it with<use href="#icon-id" />. This avoids a second request and is ideal when the sprite is small enough to be part of the initial HTML payload.

Caching considerations

Because sprites tend to be larger than individual icons, set a longCache-Control max-age and use a content hash in the filename (e.g. sprite.abc123.svg) so deploys invalidate cleanly. Most static hosts (Cloudflare Pages, Vercel, Netlify) handle this automatically when you reference the asset from your build pipeline.

FAQ

What is an SVG sprite?

A single SVG file containing many <symbol> definitions you reference with <use href="#id" />. One HTTP request, one cached asset, instant icon swaps.

How are symbol IDs generated?

Each input filename becomes a kebab-case ID. Conflicts get auto-suffixed so the sprite is always valid.

Does the sprite get optimized?

Yes. Each icon goes through SVGO before it's wrapped in a <symbol>, and a copy-paste HTML snippet shows you how to render every icon.

Is everything client-side?

Yes. Sprites are generated entirely in your browser — your icons never leave your device.

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