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92 lines
2.3 KiB
Markdown
92 lines
2.3 KiB
Markdown
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---
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description: Learn about allowed SVG elements and attributes, optimization, and other code conventions.
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---
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# SVG conventions
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Before you add an icon to Lucide, make sure its SVG is readable and optimized.
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## Global attributes
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Each icon uses these root SVG attributes:
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```xml
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<svg
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xmlns="http://www.w3.org/2000/svg"
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width="24"
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height="24"
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viewBox="0 0 24 24"
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fill="none"
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stroke="currentColor"
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stroke-width="2"
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stroke-linecap="round"
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stroke-linejoin="round"
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>
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<!-- SVGElements -->
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</svg>
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```
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## Minify paths
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Path data can get large. Minify it to keep SVG files small.
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Use [Lucide Studio](https://studio.lucide.dev/?utm_source=lucide.dev&utm_medium=design-guide) to tidy paths to 3 decimal places.
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## Allowed elements
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SVG files may only contain simple path and shape elements. These elements may only use sizing and position attributes.
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Only these elements and attributes are allowed:
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- `<path d>`
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- `<line x1 y1 x2 y2>`
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- `<polygon points>`
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- `<polyline points>`
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- `<circle cx cy r>`
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- `<ellipse cx cy rx ry>`
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- `<rect x y width height rx>`
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Do not use transforms, filters, fills, or explicit stroke colors.
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Never use [`<use>`](https://developer.mozilla.org/en-US/docs/Web/SVG/Element/use). It can reduce file size, but referenced IDs may conflict when SVGs are embedded in HTML.
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## Metadata file
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Each icon must also have a matching JSON file with contributors, use cases, tags, and categories.
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See [metadata conventions](./metadata-conventions/) for details.
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## Validation
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Before submitting SVG changes, format and validate the icon files:
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```sh
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pnpm run lint:icons
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```
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You can automatically format SVG files with Prettier:
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```sh
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pnpm run lint:icons-fix
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```
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To check icon names, categories, metadata, and SVG structure together, run:
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```sh
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pnpm run lint:icons:all
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```
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## Checklist
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Before opening a pull request, confirm that:
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- The SVG uses the standard `24 × 24` viewBox.
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- The SVG uses `fill="none"` and `stroke="currentColor"`.
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- Stroke width, line caps, and line joins match the Lucide defaults.
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- Paths are tidy and use appropriate numeric precision.
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- The SVG uses only allowed elements and attributes.
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- The SVG does not use transforms, filters, fills, explicit strokes, or `<use>`.
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- The icon has a matching JSON metadata file.
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- `pnpm run lint:icons` passes.
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- `pnpm run lint:json:icons` passes.
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