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.

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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.

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Key Capabilities

Synchronous Results

No webhooks needed. Submit an image and receive all matches in the same API response.

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.

Broad Format Support

Supports JPG, JPEG, PNG, GIF, BMP, WebP, RAW, and ICO files up to 20MB.

Image Metadata

The response includes the submitted image’s dimensions (width × height) so you can enrich your own records without re-reading the file.

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Use Cases

AI Image Detection API

Detect whether an image was generated by AI tools like DALL-E, Midjourney, or Stable Diffusion.

Plagiarism Checker API

Detect text plagiarism and verify content originality across billions of sources.

AI Video Detection API

Detect AI-generated video content with audio and visual track analysis.

Text Moderation API

Scan text for unsafe or policy-relevant material across 10+ categories.

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Next Steps

Start Building

Step-by-step guide to submitting images and interpreting results.

Endpoint Documentation

Full API reference including all request parameters and response fields.