PDF Optimizer
PDF File Optimizer
A tool that reduces PDF file size by compressing images, removing unused objects, and optimizing the document structure.
技術的詳細
PDF Optimizer uses a logical structure tree embedded in the PDF to define headings, paragraphs, lists, tables, and figure captions. Screen readers traverse this tree rather than the visual layout, enabling correct reading order even in complex multi-column designs. The tag structure follows the PDF/UA (ISO 14289) standard and maps closely to HTML semantics, making well-tagged PDFs navigable with keyboard-only and assistive technology.
例
```javascript
// PDF Optimizer: PDF manipulation example
import { PDFDocument } from 'pdf-lib';
const pdfDoc = await PDFDocument.load(fileBytes);
const pages = pdfDoc.getPages();
console.log(`Pages: ${pages.length}`);
```
関連フォーマット
関連ツール
M
Merge PDF
S
Split PDF
C
Compress PDF
R
Rotate PDF
A
Add Page Numbers
P
PDF to JPG
W
Watermark PDF
R
Reorder PDF Pages
F
Flatten PDF
E
Edit PDF Metadata
S
Sign PDF
J
JPG to PDF
E
Extract Text from PDF
D
Delete PDF Pages
R
Reverse PDF
E
Extract PDF Pages
E
Extract Odd/Even Pages
R
Resize PDF Pages
C
Crop PDF
I
Insert Blank Pages
D
Duplicate PDF Pages
P
PDF to PNG
A
Add Header & Footer
A
Add Text to PDF
A
Add Image to PDF