Design

Image Levels Adjustment

Adjust image levels with precise control over shadows, midtones, and highlights for professional tonal correction

file· File resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

# 1) Upload each file first → returns { filePath }
curl -X POST 'https://api.elysiatools.com/upload/image-levels' \
  -F 'file=@/path/to/imageFile.ext'

# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/image-levels' \
  -F 'imageFile=/path/to/file.ext' \
  -F 'shadowInput=0' \
  -F 'shadowOutput=0' \
  -F 'midtoneInput=0.5' \
  -F 'midtoneOutput=0.5' \
  -F 'highlightInput=1' \
  -F 'highlightOutput=1' \
  -F 'format=original' \
  -F 'quality=95'

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-levels

Parameters

Name	Type	Required	Description
imageFile	fileupload required	Yes	Upload any image file (JPEG, PNG, WebP, GIF, BMP, TIFF) for levels adjustment
shadowInput	number	No	Shadow input level (0 = pure black, 1 = white). Maps input shadow levels to new values
shadowOutput	number	No	Shadow output level (0 = pure black, 1 = white). Sets the output for shadow areas
midtoneInput	number	No	Midtone input level (0 = pure black, 0.5 = middle gray, 1 = white). Controls tonal balance

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-levels": {
      "name": "image-levels",
      "description": "Adjust image levels with precise control over shadows, midtones, and highlights for professional tonal correction",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=image-levels",
      "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-levels",
    "arguments": {
  "imageFile": "https://example.com/file.ext",
  "shadowInput": 0,
  "shadowOutput": 0,
  "midtoneInput": 0.5,
  "midtoneOutput": 0.5,
  "highlightInput": 1,
  "highlightOutput": 1,
  "format": "original",
  "quality": 95
}
  }
}

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).