PDF/VT

PDF for Variable and Transactional Printing

A PDF standard (ISO 16612-2) optimized for high-volume variable-data printing like personalized marketing and invoices.

技術的詳細

In the PDF specification (ISO 32000-2:2020), pdf/vt is implemented as a specialized object within the document's object graph. PDF files use a cross-reference table to index every object by byte offset, enabling random access without sequential parsing. This architecture allows pdf/vt to be read, modified, or extracted independently of other document elements. The binary structure supports incremental saves, where changes append to the file without rewriting existing content.

例

```javascript
// Add text watermark to PDF pages
const pages = pdf.getPages();
for (const page of pages) {
  page.drawText('CONFIDENTIAL', {
    x: page.getWidth() / 2 - 100,
    y: page.getHeight() / 2,
    size: 48,
    opacity: 0.2,
    rotate: degrees(45),
  });
}
```

Categories

PDF/VT

技術的詳細

例

関連フォーマット

関連ツール

関連用語