Media

Convert DNG to PNG

Convert DNG (Digital Negative) RAW files to PNG format. Automatically extracts image dimensions and metadata from the RAW file.

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/dng-to-png' \
  -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/dng-to-png' \
  -F 'imageFile=/path/to/file.ext' \
  -F 'compressionLevel=6' \
  -F 'width=Enter max width in pixels (leave empty to keep original)' \
  -F 'height=Enter max height in pixels (leave empty to keep original)' \
  -F 'brightness=1' \
  -F 'saturation=1' \
  -F 'highlight=0'

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/dng-to-png

Parameters

Name	Type	Required	Description
imageFile	fileupload required	Yes	—
compressionLevel	range	No	PNG compression level (0-9). 0 = fastest/no compression, 9 = slowest/max compression. Default 6 for good balance.
width	text	No	—
height	text	No	—
brightness	range	No	Adjust image brightness. 1.0 = default, higher = brighter, lower = darker.
saturation	range	No	Adjust color saturation. 1.0 = default, higher = more vivid, lower = more muted.
highlight	range	No	Recover blown-out highlights. 0 = off, higher = more aggressive recovery.

File-type parameters must be uploaded first via POST /upload/dng-to-png, 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-dng-to-png": {
      "name": "dng-to-png",
      "description": "Convert DNG (Digital Negative) RAW files to PNG format. Automatically extracts image dimensions and metadata from the RAW file.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=dng-to-png",
      "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": "dng-to-png",
    "arguments": {
  "imageFile": "https://example.com/file.ext",
  "compressionLevel": 6,
  "width": "Enter max width in pixels (leave empty to keep original)",
  "height": "Enter max height in pixels (leave empty to keep original)",
  "brightness": 1,
  "saturation": 1,
  "highlight": 0
}
  }
}

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]