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---
description: Learn about allowed SVG elements and attributes, optimization, and other code conventions.
---
# SVG conventions
Before you add an icon to Lucide, make sure its SVG is readable and optimized.
## Global attributes
Each icon uses these root SVG attributes:
```xml
<svg
xmlns="http://www.w3.org/2000/svg"
width="24"
height="24"
viewBox="0 0 24 24"
fill="none"
stroke="currentColor"
stroke-width="2"
stroke-linecap="round"
stroke-linejoin="round"
>
<!-- SVGElements -->
</svg>
```
## Minify paths
Path data can get large. Minify it to keep SVG files small.
Use [Lucide Studio](https://studio.lucide.dev/?utm_source=lucide.dev&utm_medium=design-guide) to tidy paths to 3 decimal places.
## Allowed elements
SVG files may only contain simple path and shape elements. These elements may only use sizing and position attributes.
Only these elements and attributes are allowed:
- `<path d>`
- `<line x1 y1 x2 y2>`
- `<polygon points>`
- `<polyline points>`
- `<circle cx cy r>`
- `<ellipse cx cy rx ry>`
- `<rect x y width height rx>`
Do not use transforms, filters, fills, or explicit stroke colors.
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.
## Metadata file
Each icon must also have a matching JSON file with contributors, use cases, tags, and categories.
See [metadata conventions](./metadata-conventions/) for details.
## Validation
Before submitting SVG changes, format and validate the icon files:
```sh
pnpm run lint:icons
```
You can automatically format SVG files with Prettier:
```sh
pnpm run lint:icons-fix
```
To check icon names, categories, metadata, and SVG structure together, run:
```sh
pnpm run lint:icons:all
```
## Checklist
Before opening a pull request, confirm that:
- The SVG uses the standard `24 × 24` viewBox.
- The SVG uses `fill="none"` and `stroke="currentColor"`.
- Stroke width, line caps, and line joins match the Lucide defaults.
- Paths are tidy and use appropriate numeric precision.
- The SVG uses only allowed elements and attributes.
- The SVG does not use transforms, filters, fills, explicit strokes, or `<use>`.
- The icon has a matching JSON metadata file.
- `pnpm run lint:icons` passes.
- `pnpm run lint:json:icons` passes.