Development

CSS Minifier

Compress CSS code

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/css-minifier' \
  -H 'Content-Type: application/json' \
  -d '{"cssCode":"Enter CSS code to minify...","level":"2","removeComments":true,"removeEmptyRules":true,"mergeMediaQueries":true}'

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/css-minifier

Parameters

Name	Type	Required	Description
cssCode	textarea	Yes	—
level	select	Yes	—
removeComments	checkbox	No	—
removeEmptyRules	checkbox	No	—
mergeMediaQueries	checkbox	No	—

Response format

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-css-minifier": {
      "name": "css-minifier",
      "description": "Compress CSS code",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=css-minifier",
      "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": "css-minifier",
    "arguments": {
  "cssCode": "Enter CSS code to minify...",
  "level": "2",
  "removeComments": true,
  "removeEmptyRules": true,
  "mergeMediaQueries": true
}
  }
}

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).

Questions or issues? Contact [email protected]

Browse tools Open tool

curl -X POST 'https://api.elysiatools.com/en/api/tools/css-minifier' \ -H 'Content-Type: application/json' \ -d '{"cssCode":"Enter CSS code to minify...","level":"2","removeComments":true,"removeEmptyRules":true,"mergeMediaQueries":true}'

Name

Type

Required

Description

cssCode

textarea

Yes

—

level

select

Yes

—

removeComments

checkbox

—

removeEmptyRules

checkbox

—

mergeMediaQueries

checkbox

—

{ "mcpServers": { "elysiatools-css-minifier": { "name": "css-minifier", "description": "Compress CSS code", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=css-minifier", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "css-minifier", "arguments": { "cssCode": "Enter CSS code to minify...", "level": "2", "removeComments": true, "removeEmptyRules": true, "mergeMediaQueries": true } } }