Chuyển đổi PDF Hai Chiều

When you convert a PDF to DOCX, LibreOffice's Draw and Writer modules parse the PDF's internal object stream — extracting text runs, font metrics, image objects, and path data. Text is reconstructed into paragraphs based on font size, position, and spacing heuristics. Tables are inferred from the spatial alignment of text blocks. The more consistently the original PDF was structured (e.g. generated from Word itself), the higher the fidelity of the round-trip conversion.

Converting PDF pages to JPG or PNG requires rasterising each page — effectively "printing" it to a virtual canvas. We use Poppler's pdftoppm utility, which implements the PDF rendering specification accurately including transparency groups, blending modes, and embedded ICC colour profiles. At 150 dpi a standard A4 page renders to roughly 1240×1754 pixels; at 300 dpi this doubles to 2480×3508 — suitable for print reproduction.

LibreOffice headless mode processes DOCX and XLSX files identically to opening them in the LibreOffice GUI — evaluating formulas, resolving styles, and rendering the layout engine — before exporting via its built-in PDF export filter. This means page breaks, header/footer styles, column layouts, and embedded images all render correctly without needing Microsoft Office on the server.

If your PDF was created by scanning a physical document (rather than being digitally generated), the "PDF" is essentially a container of images with no text layer. Standard PDF-to-Word conversion will only extract the images. For scanned documents, use the OCR Tool first to add a searchable text layer, then convert the resulting PDF or TXT output as needed.

Document files often contain sensitive information — contracts, financial data, personal correspondence. EasyConv processes all files in a temporary isolated directory that is never shared between users. Files are automatically deleted 2 hours after upload and are never scanned for content, indexed, or used for any purpose other than the conversion you request.