Happytails.aiFree tools. No account needed.

Crop PDF | agent view

The same page content and links, with explicit tool capabilities. Tools marked with an API can run directly through HTTP. Other tools require the browser interface or are not connected yet.

Tool capabilities

{
  "id": "crop-pdf",
  "category": "pdf-tools",
  "built": true,
  "requirements": "Page boxes and margins; explain cropping may leave hidden content rather than redact it.",
  "implementation": {
    "fields": [
      {
        "key": "pages",
        "label": "Pages (blank = all)",
        "value": "",
        "type": "text"
      },
      {
        "key": "margin",
        "label": "Crop margin (PDF points)",
        "value": 36,
        "type": "number"
      }
    ],
    "files": true,
    "multiple": false,
    "input": false,
    "accept": ".pdf",
    "note": "Cropping changes the visible area, not the underlying content. It is not redaction.",
    "experience": {
      "automatic": false,
      "single": false,
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Up to 1,000,000 characters. Review the settings before running.",
      "action": null
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "POST /api/v1/tools/crop-pdf/run",
  "api": {
    "id": "crop-pdf",
    "name": "Crop PDF",
    "category": "pdf-tools",
    "description": "Change the visible margins of selected PDF pages.",
    "notes": "Cropping changes the visible area, not the underlying content. It is not redaction.",
    "human_path": "/en/pdf-tools/crop-pdf/",
    "method": "POST",
    "endpoint": "/api/v1/tools/crop-pdf/run",
    "schema_url": "/api/v1/tools/crop-pdf",
    "input_schema": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "input": {
          "type": "string",
          "maxLength": 1000000,
          "default": "",
          "description": "Plain text input. File tools use files instead unless otherwise documented."
        },
        "options": {
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "pages": {
              "type": "string",
              "description": "Pages (blank = all)",
              "default": ""
            },
            "margin": {
              "type": "number",
              "description": "Crop margin (PDF points)",
              "default": 36.0
            }
          }
        },
        "files": {
          "type": "array",
          "maxItems": 1,
          "items": {
            "type": "object",
            "required": [
              "name",
              "base64"
            ],
            "additionalProperties": false,
            "properties": {
              "name": {
                "type": "string",
                "maxLength": 200,
                "description": "Filename only, no path."
              },
              "mime": {
                "type": "string",
                "maxLength": 150
              },
              "bytes": {
                "type": "integer",
                "minimum": 0,
                "description": "Optional decoded byte count; must match content if supplied."
              },
              "base64": {
                "type": "string",
                "contentEncoding": "base64",
                "description": "File bytes as padded base64. Use the tool-specific limits.files_bytes value for the total decoded input size."
              }
            }
          }
        }
      }
    },
    "output_schema": {
      "type": "object",
      "required": [
        "tool",
        "result"
      ],
      "properties": {
        "tool": {
          "type": "string"
        },
        "result": {
          "type": "object",
          "required": [
            "text",
            "files"
          ],
          "properties": {
            "text": {
              "type": [
                "string",
                "null"
              ]
            },
            "data": {
              "description": "Parsed JSON when the textual result is JSON."
            },
            "name": {
              "type": "string"
            },
            "mime": {
              "type": "string"
            },
            "files": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "name",
                  "mime",
                  "bytes",
                  "base64"
                ],
                "properties": {
                  "name": {
                    "type": "string"
                  },
                  "mime": {
                    "type": "string"
                  },
                  "bytes": {
                    "type": "integer"
                  },
                  "base64": {
                    "type": "string",
                    "contentEncoding": "base64"
                  }
                }
              }
            }
          }
        }
      }
    },
    "processing": "Server; same transformation code as browser tools",
    "limits": {
      "request_bytes": 8388608,
      "input_characters": 1000000,
      "files_bytes": 5242880,
      "max_files": 1,
      "timeout_seconds": 12
    }
  },
  "agent_processing": "Server; same transformation code as browser tools",
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

Page guide

Change the visible margins of selected PDF pages.

Useful next steps

How to use Crop PDF

  1. Choose a file in PDF.
  2. Review the settings, then choose Run Crop PDF.
  3. Review the result, then use Copy result or a download link when available.

What to expect

Change the visible margins of selected PDF pages. Enter the same crop margin for all four sides in PDF points. Cropping changes the visible area but keeps underlying content; use a true redaction tool to remove sensitive material.