LQIP Placeholder

Generate a tiny low-quality image placeholder (LQIP) from a source image. Returns a small placeholder file along with a base64 data URI, ready-to-use HTML <img> tag, and CSS background-image snippet for immediate embedding.

API Endpoint

POST /api/v1/tools/lqip-placeholder

Accepts multipart form data with an image file and a JSON settings field.

Parameters

Parameter	Type	Required	Default	Description
width	integer	No	16	Target width in pixels (4-64)
blur	number	No	2	Blur radius for the blur strategy (0-20)
strategy	string	No	"blur"	Placeholder strategy: blur, pixelate, or solid
format	string	No	"webp"	Output format: webp, png, or jpeg
quality	integer	No	50	Output quality (1-100)

Example Request

curl -X POST http://localhost:1349/api/v1/tools/lqip-placeholder \
  -H "Authorization: Bearer si_your-api-key" \
  -F "[email protected]" \
  -F 'settings={"width": 20, "strategy": "blur", "format": "webp"}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/photo.webp",
  "originalSize": 2450000,
  "processedSize": 280,
  "dataUri": "data:image/webp;base64,UklGR...",
  "width": 20,
  "height": 13,
  "bytes": 280,
  "strategy": "blur",
  "html": "<img src=\"data:image/webp;base64,UklGR...\" />",
  "css": "background-image:url('data:image/webp;base64,UklGR...');background-size:cover;background-position:center;"
}

Notes

• The dataUri field contains the complete data URI, ready for use in src attributes or CSS without any additional requests.
• The html and css fields provide copy-paste snippets for common use cases.
• The blur strategy produces a soft, blurred thumbnail. The pixelate strategy creates a blocky mosaic. The solid strategy returns a single averaged color.
• Typical placeholder sizes are 200-500 bytes, making them suitable for inlining directly in HTML.
• Height is calculated automatically to preserve the source image's aspect ratio.
• HEIC, RAW, PSD, and SVG inputs are automatically decoded before processing.