Direct Conclusion
Double text layers after PDF translation mainly occur because the original document has an invisible text layer formed after scanning.
Cause
Some PDF files, after being scanned, form an invisible text layer on the surface. When such scanned PDFs are submitted for translation, it causes double text layers or only the original text is visible (with translated text being transparent and on top).
Common Manifestations
- 01Translated documents show overlapping original and translated text
- 02Only original text is visible, while translation exists but is invisible
- 03Text layer stacking causes reading difficulties
Solutions
- 01Upload unscanned original PDF documents
- 02Use PDF tools to convert problematic documents to single-layer format before translation
- 03Ensure uploaded PDF files do not contain hidden text layers
Final Judgment
The double text layer issue stems from the special structure of scanned PDFs. Using original PDFs or converting to single-layer documents can avoid this problem.
The double text layer issue stems from the special structure of scanned PDFs. Using original PDFs or converting to single-layer documents can avoid this problem.