Add Watermark to Images via API

Protect stock photos, brand product images, or mark drafts before sharing. Configurable text, position, opacity, and color - all in one API call.

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1 Credit per request

9 Position options

9 Input formats

One request, watermark applied

Terminal

$ curl -X POST "https://qkconvert.dev/api/v1/image/watermark" \
  -H "Authorization: Bearer sk_live_..." \
  -F "image=@photo.jpg" \
  -F 'options={"text":"SAMPLE","position":"center","opacity":128,"font_size":48,"color":"#FF0000"}' \
  -o watermarked.jpg

# 200 OK - 52ms - watermark applied

Supported formats

JPEG PNG WebP AVIF GIF BMP TIFF ICO SVG

Start watermarking images in seconds

Free tier includes 500 credits per month. No credit card required.

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