# Assets & Importing
Import design files, animations, video, and more into your Lottie Creator projects. Access the Lottie Library with 100,000+ animations, and manage shared assets with the Asset Manager.

## What Are Assets?

Assets are external files imported into your project.

**Asset vs Layer:**

<List type="bullet">
  <ListItem>**Asset** - The imported file stored in the project</ListItem>
  <ListItem>**Asset Layer** - Visual representation of the asset on the canvas</ListItem>
  <ListItem>One asset can be used multiple times as different layers</ListItem>
</List>

### Supported File Formats

**Design files:** AI, EPS, PDF, PSD, SVG

**Animation files:** AEP, FLA, RIVE, LOTTIE, GIF

**Motion files:** SMIL (animated SVG), JSON

**Video files:** MP4, WebM, MOV, WebP

See [Importing Files](/en/creator/09_assets-and-importing/importing) for the full format breakdown, import options, and conversion settings.

## Asset Organization

Organize and manage imported assets.

### Layer-Based Management

Assets are managed through the layer system. View assets in Outliner panel, organize using layer hierarchy, and use precompositions for reusable components.

**Asset Organization:**

<List type="bullet">
  <ListItem>Name layers descriptively</ListItem>
  <ListItem>Group related assets</ListItem>
  <ListItem>Use precompositions for reusable elements</ListItem>
  <ListItem>Delete unused assets to reduce file size</ListItem>
</List>

### Naming Assets

**Rename Layers:**
Double-click layer name in Outliner, or select layer and press Enter. Type new name and press Enter to confirm.

<Grid columns="3">
  <Card title="Importing Files" href="/en/creator/09_assets-and-importing/importing" variant="interactive" />

  <Card title="Lottie Library" href="/en/creator/09_assets-and-importing/library" variant="interactive" />

  <Card title="Asset Manager" href="/en/creator/09_assets-and-importing/asset-manager" variant="interactive" />

  <Card title="Multi-Animation" href="/en/creator/09_assets-and-importing/multi-animation" variant="interactive" />
</Grid>