Media

Convert WebP to Optimized WebP

Convert WebP images to optimized WebP format with advanced compression settings

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/webp-to-optimized-webp' \
  -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/webp-to-optimized-webp' \
  -F 'imageFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
  -F 'quality=85' \
  -F 'effort=6' \
  -F 'method=6' \
  -F 'filterStrength=80' \
  -F 'filterSharpness=2' \
  -F 'filterType=1' \
  -F 'smartSubsample=true' \
  -F 'autoFilter=true' \
  -F 'nearLossless=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-optimized-webp

Parameters

Name	Type	Required	Description
imageFile	fileupload required	Yes	—
quality	range	No	Higher quality = larger file size. 90+ enables near-lossless
effort	range	No	Maximum effort for best compression ratio
method	range	No	Maximum method for best compression quality
filterStrength	range	No	Strength of the deblocking filter
filterSharpness	range	No	Filter sharpness for preserving edges
filterType	number	No	0: simple, 1: strong, 2: cross
smartSubsample	checkbox	No	Optimize chroma channel processing
autoFilter	checkbox	No	Let the encoder choose optimal filter settings
nearLossless	checkbox	No	Very high quality with minimal compression

File-type parameters must be uploaded first via POST /upload/webp-to-optimized-webp, 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-webp-to-optimized-webp": {
      "name": "webp-to-optimized-webp",
      "description": "Convert WebP images to optimized WebP format with advanced compression settings",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=webp-to-optimized-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-optimized-webp",
    "arguments": {
  "imageFile": "https://example.com/file.ext",
  "quality": 85,
  "effort": 6,
  "method": 6,
  "filterStrength": 80,
  "filterSharpness": 2,
  "filterType": 1,
  "smartSubsample": true,
  "autoFilter": true,
  "nearLossless": 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).

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]