UtilityBaseProductivity Tools
PDF Merger
Merge PDFs — and images — into one file, reordered your way, never uploaded.
Updated July 8, 2026
How to use the pdf merger
- 1Add your PDFs and images — click or drag and drop, any mix.
- 2Reorder with the arrows; the list order is the final page order.
- 3Remove anything that doesn't belong.
- 4Merge and download the combined PDF.
Common uses
- Combining a signed contract with photographed supporting documents
- Merging separately-scanned pages into one application packet
- Turning a folder of receipt photos into a single expense PDF
- Joining chapters or exports into one shareable document
Frequently asked questions
Are my PDFs really not uploaded?
Really. Merging runs on the pdf-lib library compiled into this page — your files are read into browser memory, combined there, and the result downloads from there. You can verify with the network tab open: no file leaves. For contracts and IDs, that's the whole point.
How are images handled?
Each PNG or JPEG becomes its own A4 page with the image centered and scaled to fit within margins, preserving aspect ratio. That turns photographed receipts and scans into proper document pages alongside your PDFs.
Why won't a password-protected PDF merge?
Encrypted PDFs restrict copying their pages, which merging requires. Unlock the file first (open it with the password and re-save, or use its owner's unlock option), then add it here. The error message will tell you which situation you've hit.
Is there a file size limit?
Only your device's memory — hundreds of pages and files in the tens of megabytes are routine on any modern machine. Enormous scanned archives (500+ MB) may get slow since everything processes in-browser; split those into two merges.
About this tool
The PDF merger combines any number of PDFs into a single document, and takes PNG and JPEG images too — each becomes a centered A4 page — so a contract plus two photographed receipts plus a scanned ID merges into one clean file. Reorder anything with the arrows before merging. The part that matters most is where it happens: entirely in your browser via pdf-lib, with nothing transmitted. The documents people merge — leases, statements, medical forms, IDs — are precisely the documents that should never be uploaded to a free-tools website, which is the entire argument for this one.
Like most tools on UtilityBase, the pdf merger runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more productivity tools here.
Was this tool helpful?
Related tools
Image Converter
Convert images between WebP, JPEG, and PNG in batches — with size comparison.
Image Tools
Signature Maker
Draw your signature and download it as a transparent PNG for documents.
Generators
EXIF Viewer & Remover
See a photo's hidden metadata — including GPS location — and strip it all.
Image Tools
Image Compressor
Shrink image file sizes with a quality slider — no upload, instant preview.
Image Tools
PDF Compressor
Shrink PDF file size in your browser — three presets, no upload, no limits.
Productivity Tools
PDF Filler & Signer
Add text and a drawn signature to any PDF — placed, sized, and saved locally.
Productivity Tools