Merge PDF
Combine multiple PDFs into a single file. Reorder documents before merging — page counts shown for each file.
How merging PDFs helps in real workflows
Professionals merge PDFs every day: accountants bundle monthly invoices, lawyers combine exhibits, students merge lecture notes, and HR teams join signed forms into one packet. A browser-based merger avoids emailing sensitive documents to a third-party converter. You keep custody of the file from selection through download.
DoItSwift reads each PDF with pdf-lib, copies every page in list order into a new document, and saves a fresh
file named merged.pdf. Reordering happens entirely in the page — drag a row up or down before you
click merge. If one PDF is password-protected or corrupted, that file may fail; try unlocking or re-exporting it
from the original app first.
For archival, merging reduces clutter: instead of twelve separate “Statement_Jan.pdf” files, one “Statements_2026.pdf” is easier to back up and share. Combine that with our split and compress tools when you need the opposite operations later.
Frequently Asked Questions
Is merge PDF free?
Yes — unlimited merges in your browser, no account.
Are files uploaded?
No. Merging uses JavaScript on your device; we never see your PDFs.
Why do I need at least two PDFs?
Merging combines multiple sources. For a single file, use split or compress instead.
Does order matter?
Yes. Top of the list becomes the first pages of the merged PDF. Drag rows to fix order.
Will bookmarks and forms be preserved?
pdf-lib copies page content; complex interactive features may not transfer perfectly. Test important forms after merge.
Can I merge on mobile?
Yes on modern phones; very large PDFs may be slow — use Wi-Fi and patience.