happytails.ai

PDF metadata editor

Open PDF metadata editor on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "pdf-metadata-editor",
  "category": "pdf-tools",
  "built": true,
  "requirements": "This edits standard PDF document-information fields only. It does not remove XMP metadata, annotations, hidden content or personal data elsewhere in the file. It is not redaction or anonymization, and saving creates a new copy.",
  "implementation": {
    "fields": [
      {
        "key": "title",
        "label": "Title (blank keeps current)",
        "value": "",
        "type": "text"
      },
      {
        "key": "author",
        "label": "Author (blank keeps current)",
        "value": "",
        "type": "text"
      },
      {
        "key": "subject",
        "label": "Subject (blank keeps current)",
        "value": "",
        "type": "text"
      },
      {
        "key": "keywords",
        "label": "Keywords, separated by commas",
        "value": "",
        "type": "text"
      },
      {
        "key": "clear",
        "label": "Clear a field when its input is blank",
        "value": false,
        "type": "checkbox"
      }
    ],
    "files": true,
    "input": false,
    "accept": ".pdf",
    "note": "Edits standard PDF document-information fields. Blank fields keep their current values unless you enable clearing. Existing XMP metadata and hidden data are not removed. This is not a redaction or anonymization tool.",
    "experience": {
      "automatic": false,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Up to 1,000,000 characters. Review the settings before running.",
      "helpParts": [
        "Up to 1,000,000 characters.",
        "Review the settings before running."
      ],
      "action": null
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "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

Update a PDF's title, author, subject and keywords.

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

Useful next steps

Merge PDFReorder pages

How to use it

Choose your PDF and fill in the document-information fields you want to change. Blank fields keep their current values unless you enable the clearing option. Keywords are separated by commas.

A worked example

Set the title to Project brief and author to Design team. Leave Subject empty to preserve it, or enable clearing to remove an existing subject when its input is blank.

What to know

This edits standard PDF document-information fields only. It does not remove XMP metadata, annotations, hidden content or personal data elsewhere in the file. It is not redaction or anonymization, and saving creates a new copy.