# PDF metadata editor

- Human page: https://happytails.ai/en/pdf-tools/pdf-metadata-editor/
- Markdown: https://happytails.ai/en/pdf-tools/pdf-metadata-editor.md
- Structured JSON: https://happytails.ai/agents/en/pdf-tools/pdf-metadata-editor/index.json
- Visibility: public

## Tool capabilities

| Property | Value |
| --- | --- |
| Tool ID | `pdf-metadata-editor` |
| Category | pdf-tools |
| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |
| Browser execution | Use the visible action or interactive controls. |
| Browser processing | Browser; see tool notes for network behavior. |
| HTTP API | Not callable through HTTP. |
| Browser-agent interface | run_current_tool |

### Implementation notes

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.

### Inputs and settings

No free-text input is required. Use the file inputs and/or settings below.

Accepted browser files: `.pdf`. Choose one file.

| Setting | Meaning | Control type | Default | Constraints |
| --- | --- | --- | --- | --- |
| `title` | Title (blank keeps current) | text | "" |  |
| `author` | Author (blank keeps current) | text | "" |  |
| `subject` | Subject (blank keeps current) | text | "" |  |
| `keywords` | Keywords, separated by commas | text | "" |  |
| `clear` | Clear a field when its input is blank | checkbox | false |  |

### Browser-agent workflow

1. Open the human page in a browser that supports WebMCP.
2. Discover the interface exposed by that page; use its actual schema.
3. Select files on the page first when the tool requires files.
4. Call `run_current_tool` with valid input and settings.
5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.

Calls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.

### Planning specification

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.

This describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.

### Complete machine-readable capability record

```json
{
  "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.",
      "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 can we improve this tool?

Report a problem or share an idea.

Please leave out private information. Your message and the tool name go to our team via PostHog.

### 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 PDF](https://happytails.ai/en/pdf-tools/merge-pdf/) ([Markdown](https://happytails.ai/en/pdf-tools/merge-pdf.md))

- [Reorder pages](https://happytails.ai/en/pdf-tools/reorder-pages/) ([Markdown](https://happytails.ai/en/pdf-tools/reorder-pages.md))

## 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.