Watermark & Logo Detector

Detect watermarks, logos, stamps, corner marks, and text overlays in images with an LLM. Useful for stock-photo screening, UGC rights checks, and catalog cleanup.

What it does

For each image URL (or base64 payload), the Actor returns:

Field	Meaning
hasOverlay	Any overlay found
hasWatermark	Watermark / stamp / corner mark
hasLogo	Brand or company logo overlay
hasTextOverlay	Burned-in caption / promo text
detections[]	Per-overlay type, label, text, position, opacity, confidence
primaryType	Highest-confidence overlay type (none if clean)
reason	Short explanation

Detection types: watermark, logo, stamp, text_overlay, corner_mark.

Pricing

This Actor uses pay per result:

• $0.01 per successfully analyzed image ($10.00 / 1,000 results)
• You only pay for successful results written to the default dataset
• Failed images are not charged (logged in the errors dataset)

How to use

1. Open this Actor on Apify
2. Paste one or more public image URLs (or provide base64 in images)
3. Optionally set minConfidence (default 0.5)
4. Click Start
5. Review results in the Dataset / Output tab

Input

Field	Required	Description
imageUrls	one of urls/images	Public image URLs
images	one of urls/images	Objects: { id?, url?, base64? }
minConfidence	no	Ignore weak detections (0–1, default 0.5)
maxConcurrency	no	Parallel analyses (default 5)

Example input

{
  "imageUrls": [
    "https://example.com/photo-1.jpg",
    "https://example.com/photo-2.jpg"
  ],
  "minConfidence": 0.5,
  "maxConcurrency": 5
}

Example dataset item

{
  "imageId": "url-1",
  "imageUrl": "https://example.com/photo-1.jpg",
  "hasOverlay": true,
  "hasWatermark": true,
  "hasLogo": false,
  "hasTextOverlay": false,
  "detectionCount": 1,
  "primaryType": "watermark",
  "overallConfidence": 0.91,
  "detections": [
    {
      "type": "watermark",
      "label": "Stock watermark",
      "text": "sample",
      "position": "repeated",
      "opacity": "medium",
      "confidence": 0.91,
      "isBrandLogo": false
    }
  ],
  "reason": "Repeated semi-transparent stock watermark across the image.",
  "error": null
}

Notes

• Image URLs must be publicly reachable so the Actor can download them for analysis.
• For private images, pass base64 in the images array instead of a URL.
• Normal scene text (e.g. a real storefront sign) is not treated as an overlay.
• LLM inference cost is covered by the Actor configuration; Apify run compute is billed by Apify.