Image Cropper

Crop images to specific dimensions or aspect ratios with custom positioning

file· File resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/image-cropper' \
  -H 'Content-Type: application/json' \
  -d '{"filename":"imageFile.ext","contentType":"application/octet-stream","size":12345}'

# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
  --data-binary @/path/to/file.ext

# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/en/api/tools/image-cropper' \
  -F 'imageFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
  -F 'cropMode=square' \
  -F 'aspectRatio=16:9' \
  -F 'width=0' \
  -F 'height=0' \
  -F 'gravity=center' \
  -F 'x=0' \
  -F 'y=0' \
  -F 'format=original' \
  -F 'quality=90'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/image-cropper

Parameters

Name	Type	Required	Description
imageFile	fileupload required	Yes	Upload any image file (JPEG, PNG, WebP, GIF, BMP, TIFF) for cropping
cropMode	select	Yes	Choose how to crop your image: square, aspect ratio, exact dimensions, or custom positioning
aspectRatio	select	No	Select a predefined aspect ratio for cropping. The image will be cropped to match this ratio
width	number	No	Set the exact width for cropped area. Will be limited to image width if larger
height	number	No	Set the exact height for cropped area. Will be limited to image height if larger
gravity	select	No	Choose where to position the crop area. Works with all crop modes
x	number	No	Set the horizontal position for crop area (0 = left edge). Will be adjusted if outside image bounds
y	number	No	Set the vertical position for crop area (0 = top edge). Will be adjusted if outside image bounds
format	select	No	Choose output format or keep original. Converting to JPEG may reduce quality for transparency
quality	number	No	Output quality for lossy formats (JPEG, WebP). Higher = better quality but larger file size

File-type parameters must be uploaded first via POST /upload/image-cropper, then the returned filePath is passed to the corresponding file field.

Response format

File result

JSON

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-image-cropper": {
      "name": "image-cropper",
      "description": "Crop images to specific dimensions or aspect ratios with custom positioning",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=image-cropper",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "image-cropper",
    "arguments": {
  "imageFile": "https://example.com/file.ext",
  "cropMode": "square",
  "aspectRatio": "16:9",
  "width": 0,
  "height": 0,
  "gravity": "center",
  "x": 0,
  "y": 0,
  "format": "original",
  "quality": 90
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

File parameters accept a public file URL only (https://…). Local paths, data: URIs, and Base64 strings are not supported.

Questions or issues? Contact [email protected]