Merge PDF
Combine several PDF files into one, in the order you choose.
Your files are processed inside your browser. Nothing is uploaded to any server.
Merge PDF files in your browser
Combine scanned certificates, drawings, bills of quantities or chapters of a report into one PDF. The merge happens on your own phone or computer. Nothing is sent to a server, so it is safe for citizenship copies, transcripts and tender documents.
How to merge PDFs
- Click the box above and select your PDF files, or drag them in.
- Use the arrows to put the files in the order you want.
- Click Merge PDFs. The combined file downloads as
merged.pdf.
Frequently asked questions
Is there a limit on file size?
There is no fixed limit, but very large files (hundreds of MB) depend on your device memory. On a phone, merging up to around 100 MB in total works well.
Can I merge password-protected PDFs?
Files that only have permission restrictions usually merge fine. Files that need a password to open must be unlocked first.
My merged file is too big to upload to a form. What now?
Run it through Compress PDF to reduce the size.
What the tool does to your files
The merger reads each PDF on your device and copies its pages, as they are, into one new document in the order of the list. It does not re-scan or re-compress anything, so text stays sharp and scanned pages keep their quality. It also means the merged file is about the same size as all the input files added together. When the merge finishes, the tool tells you how many files and pages went in and the size of merged.pdf.
Worked example: a running bill for a building project
A site engineer has to send one PDF for a running bill: a covering letter (1 page, 120 KB), scanned measurement book pages (6 pages, 2.4 MB) and the bill of quantities (3 pages, 180 KB).
- Select all three files. If the scans came out sideways, fix them first with Rotate PDF.
- Use the arrows to set the order: letter, BOQ, measurement pages, so the reader sees the summary first.
- Click Merge PDFs. The result is one file of 10 pages, about 2.7 MB.
- If the portal or email limit is lower than that, compress the merged file with Compress PDF. Scanned pages shrink the most; typed pages change little.
Suggested order for common document sets
| Purpose | Usual order |
|---|---|
| University or scholarship application | Application form, citizenship copy, SEE and +2 transcripts, bachelor transcript, character certificate, other certificates |
| Job application for an engineer | Cover letter, CV, academic transcripts, council registration, experience letters |
| Tender or bid submission | Bid letter, firm registration, PAN or VAT certificate, tax clearance, experience and equipment documents, as the bid document lists them |
| Project report | Title page, contents, chapters in order, drawings, appendices |
The checklist in the notice or bid document always wins. Follow its order exactly, because the person checking the file goes down that list.
Common mistakes
- Merging photos taken on a phone without converting them. The tool only accepts PDFs and skips other files. Convert photos first with JPG to PDF.
- Adding a file that needs a password to open. The tool will report it. Open it with the password and save or print it as a new PDF first.
- Checking the order only after uploading. Open merged.pdf and scroll through it once before you submit. To move or delete single pages, use Organize PDF.
- Expecting the merge to make the file smaller. It will not. Merge first, then compress once.
More questions
Does merging lower the quality?
No. Pages are copied as they are. Only compression changes quality.
Can I take one file apart again?
Yes. Use Split PDF to cut a merged file back into parts or pick out page ranges.
Does it work on a phone?
Yes. It runs in the phone browser. Very large scans may be slow on older phones, so close other apps first.
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