Design

Base64 to Image Converter

Convert Base64 encoded images back to image files with support for various formats

file· File resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/base64-to-image' \
  -H 'Content-Type: application/json' \
  -d '{"base64Data":"Paste your Base64 encoded image data here (with or without data URI prefix)...","outputFormat":"auto","autoDetectFormat":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/base64-to-image

Parameters

Name	Type	Required	Description
base64Data	text	Yes	—
outputFormat	select	Yes	—
autoDetectFormat	checkbox	No	—

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-base64-to-image": {
      "name": "base64-to-image",
      "description": "Convert Base64 encoded images back to image files with support for various formats",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=base64-to-image",
      "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": "base64-to-image",
    "arguments": {
  "base64Data": "Paste your Base64 encoded image data here (with or without data URI prefix)...",
  "outputFormat": "auto",
  "autoDetectFormat": 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/base64-to-image' \ -H 'Content-Type: application/json' \ -d '{"base64Data":"Paste your Base64 encoded image data here (with or without data URI prefix)...","outputFormat":"auto","autoDetectFormat":true}'

Name

Type

Required

Description

base64Data

text

Yes

—

outputFormat

select

Yes

—

autoDetectFormat

checkbox

—

{ "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)" }

{ "mcpServers": { "elysiatools-base64-to-image": { "name": "base64-to-image", "description": "Convert Base64 encoded images back to image files with support for various formats", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=base64-to-image", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "base64-to-image", "arguments": { "base64Data": "Paste your Base64 encoded image data here (with or without data URI prefix)...", "outputFormat": "auto", "autoDetectFormat": true } } }