Merge PDF Files into One
Combine two or more PDFs into a single file. Add the files, arrange them in the order you want, and download one PDF with every page intact. Nothing is uploaded: the merge happens in your browser.
How to merge PDF files
- 1Add your PDFs. Drop the files onto the box or tap to choose them. You can add more in several goes, for example from different folders.
- 2Put them in order. Use the up and down arrows to arrange the list. The file at the top becomes the first pages of the merged PDF. Remove any file with the cross.
- 3Merge and download. Tap Merge. The combined PDF is ready in a few seconds and keeps every page exactly as it was.
When merging PDFs saves time
Many forms and portals accept only one attachment, and reviewers find one file far easier to read than six. Typical cases:
- Job and university applications that want the CV, certificates, and ID in one PDF
- Visa, passport, and loan paperwork with a strict one-file upload slot
- Expense claims that combine the claim form with every receipt
- Monthly statements or invoices collected into a single archive file
- Chapters of a thesis or report written as separate documents
What stays the same after merging
Pages are copied across as they are, so text stays sharp and selectable, images keep their quality, and page sizes are preserved. A merged file can mix A4 and Letter pages, or portrait and landscape ones, without anything being stretched.
The merged file is roughly the size of all the originals added together. If it is too large for an email or upload limit, scanned pages and phone photos are usually the cause. Compress PDF can bring the merged file under a limit such as 1 MB or 200 KB, and removing pages you do not need with Remove PDF Pages helps too.
Getting the order right
Think about the order the reader expects before you merge: usually a cover letter or form first, then the main document, then supporting evidence in the order it is referred to. Numbered file names help you spot gaps in the list, and the position number next to each file shows exactly where it will land.
If you notice a single page in the wrong place after merging, you do not need to start again. Delete it with Remove PDF Pages, save it separately with Split PDF, and merge it back in at the right point.
Finishing touches after merging
A merged bundle often needs a little more before it goes out. Add page numbers so people can refer to specific pages, turn sideways scans upright with Rotate PDF, and add a password if the pack contains personal documents. Do these after merging so the numbering runs through the whole file.
Password-protected files
A PDF that asks for a password when you open it cannot be merged until it is unlocked. If you know the password, remove it with Unlock PDF, merge the unlocked copy, and protect the merged file again if needed.
Frequently asked questions
How many PDFs can I merge at once?
There is no fixed limit on the number of files. Each file can be up to 20 MB, and very large totals may be slow on older phones.
Can I change the order after adding files?
Yes. Use the arrows next to each file to move it up or down before you merge.
Will merging reduce quality?
No. Pages are copied as they are, without being re-compressed or converted.
Can I merge images with PDFs?
Convert the images first with JPG to PDF, then merge the resulting PDF with your other files.
Are bookmarks and links kept?
Page content and web links on the pages are kept. The sidebar bookmarks from the original files are not carried into the merged document.
Are my files uploaded?
No. The files are combined in your browser and never leave your device.
Want more detail? Read on our blog: How to Prepare Photos and Documents for Online Application Forms