Yes. PDFidelity preserves two-column journal layouts, maintaining the original structure so you can read papers as they were published.

Tables and figures remain intact with their structure preserved. Captions are translated while maintaining the visual layout and readability.

Yes. Citation markers, reference lists, and in-text citations are maintained exactly as in the original, ensuring academic integrity.

Mathematical equations and formulas are preserved in their original format. Only surrounding text is translated, keeping formulas intact.

We support translation from English to Spanish, and from multiple languages. Check the upload page for the full list of supported language pairs.

Translation time depends on the PDF size and complexity. Most research papers are ready within minutes. You'll be notified when your translation is complete.

PDFidelity works best with text-based PDFs from publishers. Scanned or image-only PDFs may have reduced accuracy. We're continuously improving OCR handling.

Files are processed securely. Free files are deleted within 5 days; active paid-plan files stay available while you keep using them, with an in-app warning before inactivity cleanup.

If formatting issues occur, try uploading a text-based PDF rather than a scanned version. For best results, use publisher-style PDFs with clear text structure.