Media

Convert WebP to Resized WebP

Resize WebP images while maintaining WebP format and quality

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/webp-to-resized-webp' \
  -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/webp-to-resized-webp' \
  -F 'imageFile=/path/to/file.ext' \
  -F 'width=0' \
  -F 'height=0' \
  -F 'fit=cover' \
  -F 'position=center' \
  -F 'background=transparent' \
  -F 'quality=90' \
  -F 'withoutEnlargement=false'

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/webp-to-resized-webp

Parameters

Name	Type	Required	Description
imageFile	fileupload required	Yes	—
width	number	No	Leave empty to auto-calculate based on height and aspect ratio
height	number	No	Leave empty to auto-calculate based on width and aspect ratio
fit	select	No	—
position	select	No

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-webp-to-resized-webp": {
      "name": "webp-to-resized-webp",
      "description": "Resize WebP images while maintaining WebP format and quality",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=webp-to-resized-webp",
      "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": "webp-to-resized-webp",
    "arguments": {
  "imageFile": "https://example.com/file.ext",
  "width": 0,
  "height": 0,
  "fit": "cover",
  "position": "center",
  "background": "transparent",
  "quality": 90,
  "withoutEnlargement": false
}
  }
}

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).

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