Guide: Merge PDF Files Without Adobe (Quickly)

Merging sounds trivial until page order matters for auditors or professors. Here is the workflow we use when a dozen attachments land in email.

Order first, merge second

Drag thumbnails until the story reads correctly—cover memo, invoices, then appendices.

Normalize page sizes

Mixing A4 and Letter creates awkward jumps. Scale the outliers before exporting.

Compress after merging

If the packet is >15 MB, run a light compression pass so mobile clients can open it.

For image-heavy source material, pair this with background removal tips so product shots stay crisp.