Question 1

Does Merge PDF upload my PDF?

Accepted Answer

No. The document bytes stay in the browser and processing runs on the device. OCR may download its recognition engine and language model, but the PDF itself is not sent with that download.

Question 2

Will the original PDF be changed?

Accepted Answer

No. The studio works non-destructively and produces a new download. Keep the original until you have reviewed the exported copy.

Question 3

Are there PDFs this browser tool cannot process?

Accepted Answer

Yes. A damaged file, unsupported encryption, huge scan, complex XFA form, uncommon font or signed document can require desktop specialist software. The studio reports a failure or limitation instead of silently inventing a result.

Merge PDFs in the exact order.