Does merging add a watermark?

No. ExactPDF merges PDFs locally with pdf-lib — output is identical to your inputs, just concatenated in order.

Is there a file or page limit?

No artificial cap on free tier. Practical limits are your device RAM and browser; most laptops handle multi-hundred-page merges.

No. Open DevTools Network: you will not see your PDF bytes sent anywhere.

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Merge PDF Without Watermark — Free, No Upload

Published 2026-05-11

5 min read

Why watermark-free merge matters

Cloud merge tools sometimes stamp "Converted with…" or block bulk export until you pay. ExactPDF uses pdf-lib in your tab — the bytes that leave are exactly what you combined.

Merge in three steps

Open Merge PDF.

Drag files and reorder thumbnails.

Download one combined PDF — no signup.

Privacy

Financial statements, offer letters, and NDAs should not ride a CDN you do not control. Local merge means zero upload — verify in DevTools Network: your PDF is not sent anywhere.