Question 1

Does PDFスタジオ merge PDFs without uploading?

Accepted Answer

Yes — merge, split, rotate and compress run locally with qpdf/pdf-lib in your browser.

Question 2

Can I OCR scanned PDFs?

Accepted Answer

Yes — Tesseract WASM adds a searchable text layer; use PDF to Text when text is already embedded.

Question 3

Are bookmarks fully editable?

Accepted Answer

Outline viewing is supported; full bookmark editing is limited by the underlying PDF library.