Question 1

Do you upload my PDFs to a server?

Accepted Answer

No. All PDF tools run entirely in your browser using JavaScript. Your files never leave your device. We cannot see, store, or access your PDFs.

Question 2

What can I do with PDF Studio?

Accepted Answer

PDF Studio is our central hub for PDF editing. You can merge multiple PDFs, split a single PDF into pages, rotate pages, remove specific pages, add watermarks, apply digital signatures, and organize the page order — all in one interface.

Question 3

Can I merge PDFs with different page sizes?

Accepted Answer

Yes. The merge tool combines PDFs exactly as they are, preserving original page sizes, fonts, and formatting. If you have a 8.5×11" document and a 4×6" document, they will merge with both sizes intact.

Question 4

How much can I compress a PDF?

Accepted Answer

Compression depends on your PDF's content. Text-heavy PDFs compress 20–40%. Image-heavy PDFs can compress 50–80% with the Recommended preset. Quality and readability are preserved — you can adjust the compression level to suit your needs.

Question 5

Is my password protection secure?

Accepted Answer

Yes. Password-protected PDFs use AES-256 encryption (military-grade security). The password is processed server-side using pikepdf, never logged or stored. Once you download the protected PDF, it's fully encrypted.

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