PDF Tools

PDF Deskew

Automatically detect and correct skewed (tilted) PDF pages. Preserves text pages as searchable vector content and only rasterizes image pages (e.g. scans).

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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/pdf-deskew' \
  -F 'file=@/path/to/sourceFile.ext'

# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/pdf-deskew' \
  -F 'sourceFile=/public/samples/pdf/sample-multipage.pdf' \
  -F 'mode=auto' \
  -F 'manualAngle=0' \
  -F 'threshold=0.5' \
  -F 'rasterizeText=false' \
  -F 'pageRange='

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/pdf-deskew

Parameters

Name	Type	Required	Description
sourceFile	fileupload required	Yes	—
mode	select	Yes	—
manualAngle	number	No	Manual correction angle (degrees). Positive value corrects a clockwise tilt. Only used in Manual mode.
threshold	number	No	Minimum detected skew angle (in degrees) required to apply correction in Auto mode. Smaller values detect subtle tilts.
rasterizeText	select

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-pdf-deskew": {
      "name": "pdf-deskew",
      "description": "Automatically detect and correct skewed (tilted) PDF pages. Preserves text pages as searchable vector content and only rasterizes image pages (e.g. scans).",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=pdf-deskew",
      "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": "pdf-deskew",
    "arguments": {
  "sourceFile": "/public/samples/pdf/sample-multipage.pdf",
  "mode": "auto",
  "manualAngle": 0,
  "threshold": 0.5,
  "rasterizeText": "false",
  "pageRange": ""
}
  }
}

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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