# Image Plagiarism Detection API

> Detect unauthorized copies and usages of your images across the web with the Copyleaks Image Plagiarism Detection API.

Protect your visual content from unauthorized use. The Copyleaks Image Plagiarism Detection API performs a deep reverse image search across the public web, returning a categorized list of exact copies and modified versions of your image - along with the web pages they appear on - all in a single synchronous API call.

## How It Works

Submit any image and the API returns two categories of matches:

- **Full matches** - Exact or near-exact copies of your image hosted anywhere on the web.
- **Partial matches** - Cropped, resized, recolored, or otherwise modified versions of your image.

Each match includes the source image URL, a `matchType` value, and the list of web pages where the image was found, so you can act on results programmatically.

## Key Capabilities

<CardGroup cols={2}>
  <Card title="Synchronous Results">
    No webhooks needed. Submit an image and receive all matches in the same API response.
  </Card>
  <Card title="Two Match Categories">
    Distinguish between exact copies and modified versions of your image - each with its own match type, count, and the web pages where it was found.
  </Card>
  <Card title="Broad Format Support">
    Supports JPG, JPEG, PNG, GIF, BMP, WebP, RAW, and ICO files up to 20MB.
  </Card>
  <Card title="Image Metadata">
    The response includes the submitted image's dimensions (width × height) so you can enrich your own records without re-reading the file.
  </Card>
</CardGroup>

## Use Cases

<Tabs>
  <Tab title="Copyright Protection">
    Detect unauthorized use of your photography, artwork, or branded imagery across the web. Track where your images appear and take action against infringement.
  </Tab>
  <Tab title="Brand Monitoring">
    Ensure your official brand assets - logos, product photos, campaign images - are not being misused, modified, or reposted without permission.
  </Tab>
  <Tab title="Content Authenticity">
    Verify whether a submitted image is genuinely original or has been copied from another source. Useful for stock photo platforms, news agencies, and UGC moderation.
  </Tab>
  <Tab title="Academic Integrity">
    Detect whether images submitted in academic work have been copied from public sources, complementing text plagiarism detection in a complete integrity workflow.
  </Tab>
</Tabs>

## Related Products

<CardGroup cols={2}>
  <Card title="AI Image Detection API" href="/concepts/products/ai-image-detection-api">Detect whether an image was generated by AI tools like DALL-E, Midjourney, or Stable Diffusion.</Card>
  <Card title="Plagiarism Checker API" href="/concepts/products/plagiarism-checker-api">Detect text plagiarism and verify content originality across billions of sources.</Card>
  <Card title="AI Video Detection API" href="/concepts/products/ai-video-detection-api">Detect AI-generated video content with audio and visual track analysis.</Card>
  <Card title="Text Moderation API" href="/concepts/products/text-moderation-api">Scan text for unsafe or policy-relevant material across 10+ categories.</Card>
</CardGroup>

## Next Steps

<CardGroup cols={2}>
  <Card title="Start Building" href="/guides/authenticity/image-plagiarism-detection">Step-by-step guide to submitting images and interpreting results.</Card>
  <Card title="Endpoint Documentation" href="/reference/actions/image-plagiarism-detector/check">Full API reference including all request parameters and response fields.</Card>
</CardGroup>