Merge PDF
Add two or more unlocked PDFs, drag the order, and merge. Pages are copied with pdf-lib in this tab. FlashKit never sees the files.
Bookmarks, some AcroForm fields, attachments, and digital signatures may not carry over. That is a library limit, not a hidden upload.
How to Use
- Add PDFs with the picker or drag-and-drop.
- Use the arrows to set page order (top file comes first).
- Click Merge. Encrypted files will stop the job with an error.
- Download merged.pdf and spot-check page order.
Key Features
- Local page copy — no FlashKit storage
- Reorder before merge
- Honest errors for password-protected files
- Pairs with the PDF compressor and header/footer stamp
Frequently Asked Questions
Can I merge a password PDF?
Not here. Unlock it in a desktop reader first, then upload the unlocked copy.
Is there a page cap?
There is no server quota. Very large stacks can exhaust tab memory. Merge in batches on a phone.
Will outlines/bookmarks remain?
Usually not. Treat this as a page concatenator, not a full PDF package merger.